Geodiversity Index Research Articles

Exploring the Correlation between Geoheritage and Geodiversity through Comprehensive Mapping: A Study within the Sesia Val Grande UNESCO Global Geopark (NW Italy)

While geoheritage and geodiversity have been well defined in the literature, the multiplicity of definitions given to these two concepts makes it difficult to establish an unambiguous relationship between them. Basing on semantic-ontological studies, this study aims to reduce this ambiguity within the concepts by investigating the relationship between the geodiversity richness and the presence of geoheritage, and discussing whether the areas with the greatest geodiversity are the ones with the most relevant geoheritage, thus questioning the potential use of the geodiversity index map. Upon a strong theoretical framework, a quantitative geodiversity index map was created for the Alagna Valsesia municipality, within the Sesia Val Grande UNESCO Global Geopark (Italian Western Alps). Then, 25 geosites were identified and mapped in the same area. Notably, the exploration into the correlation between geodiversity and geoheritage on the field shows that in our study area there is no spatial correlation between the geodiversity class and the number of geosites, proving that some geosites may occur in areas of low geodiversity and the greatest geodiversity are not the ones with the most relevant geoheritage. Moreover, all the non-parametric regression models tested are not significant, indicating that there is no predictable relationship between geodiversity and geoheritage in Alagna Valsesia (NW Alps). For that reason, our work highlights that although the quantitative geodiversity map can have an important role for geoconservation and within biodiversity studies, it could not be a strong tool for geosites recognition and tourism promotion, while for this purpose should be better use a qualitative geodiversity map. Finally, the potential use of the geodiversity map depends on the purpose of the study and the approach used to produce it. For a comprehensive geoconservation and geoheritage promotion strategy, the two approaches (qualitative and quantitative) may be complementary.

Geodiversity Assessment in the Midriff Islands Region of the Gulf of California (Northwest Mexico)

A concurrent qualitative-quantitative assessment of geodiversity was carried out within the Midriff Islands, a priority region within the Gulf of California that stands out for its geological, ecological, and cultural importance. This study is carried out on the coast of central Sonora, where the Comcaac indigenous community has lived for more than a thousand years imbuing their territory with material and symbolic values. The objective of this study was to highlight the elements of geodiversity and contribute to the management and conservation strategies that are carried out in the area. The qualitative approach consisted of detailed fieldwork and a descriptive-documentary assessment of the geodiversity attributes of the study area, which led to the preparation of geomorphological and geological maps. The quantitative approach consisted of the elaboration of a geodiversity index map using an adapted methodology that considered some sites of cultural value due to their relationship with abiotic natural elements of geodiversity. As a result of both approaches, several localities and zones of high to medium geodiversity were identified mainly located along the mountain ranges and the coast. Coastal areas, although not having the highest geodiversity, could be considered the most relevant in terms of geological heritage and geoconservation, because they comprise a variety of rocky outcrops and extraordinary landforms with scientific interest, as well as cultural and aesthetic values. In addition, the concurrent assessment was favorable to recognize localities where geoconservation and sustainable use strategies, such as geotourism, can be implemented.

Geodiversity of Italy

ABSTRACT In recent years, natural areas have been exposed to increasing anthropogenic pressure related to the growing need for natural resources. Comprehensive information on the geodiversity of a territory is essential for all stakeholders in order to define effective land management toolsusefull for preserving the natural heritage for future generations. We computed geodiversity map as the summary of lithological, morphological, paedological indicators and hydrological index using a workflow based on the grid analysis, performed in a Geographic Information System environment. The geodiversity map of Italy (main map) provides a synoptic view of the geographical distribution of the abiotic component of the landscape ranked into five classes varying from very high to very low geodiversity. This map is supplemented by histograms showing the percentages of geodiversity classes for each Italian region and a Regional Geodiversity Index map that assigns a geodiversity value to each Italian region.

Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland

This study investigated the geodiversity of the Archipelago Sea in the northern Baltic Sea, focusing on geological features and their spatial distribution. By adapting methods used in previous Baltic Sea studies, we conducted spatial analyses of geological data sets including bedrock type, seabed substrates and seabed structures. Bedrock and substrate data were freely available, while seabed structures were modelled from bathymetry data. Geodiversity was quantified using a geodiversity index, which considers the variety of physical elements, roughness and area of the unit. The analyses revealed a diverse seabed environment in the Archipelago Sea with varying geodiversity throughout the study area. Significant features contributing to geodiversity included bedrock fracture and fault zones and large end-moraine formations. Similar patterns have been observed in terrestrial areas of Finland. The analyses also detected relations between archipelago zonation and geodiversity with areas of open sea more homogeneous than the middle and inner archipelago. This study formally recognises the complexity of the seabed in the Archipelago Sea and highlights the importance of understanding the geological processes shaping the region. The results can inform maritime spatial planning and sustainable resource management.

Global geodiversity components are not equally represented in UNESCO Global Geoparks.

The aim of UNESCO Global Geoparks (UGGs) is to protect globally significant geoheritage and geodiversity, but quantitative evidence on the global representativeness of geodiversity components (i.e. geology, soils, geomorphology and hydrology) in these geoparks is in short supply. Here, we provide a first assessment by deriving a global map of geodiversity to test whether the presence of geodiversity components in UGGs is representative for the global availability and distribution of geodiversity. Using openly accessible global datasets and a newly developed workflow, we have calculated metrics for each geodiversity component and a global geodiversity index; we then quantified whether UGGs represent global geodiversity and then compared their components to a randomized spatial distribution of geoparks. Our results show that lithological and topographical diversity are more represented in UGGs than outside these sites, while soil type and hydrological diversity are not significantly different. Furthermore, individual soil types and lithological classes are under-represented and unevenly distributed in Asian and European UGGs. This is probably caused by the concentration of geoparks in Asian and European mountains. To better conserve geodiversity, we suggest an initiative to consider the protection and representation of all geodiversity components in their global context. This article is part of the Theo Murphy meeting issue 'Geodiversity for science and society'.

Geodiversity Hotspots in Itabirito

Objectives: The objective of this work is to establish the Geodiversity Index for the municipality of Itabirito. It is expected to identify Geodiversity Hotspots, priority areas for conservation. Theoretical Framework: The literature review addressed geological resources, geodiversity and geoconservation of the Iron Quadrangle. Currently, the relevance of geodiversity is growing among scientific journals, research groups and government programs. Method: As a methodology, based on a bibliographical review of scientific works to determine the Geodiversity Index, and collection of secondary data on the physical environment of Itabirito, a grid polygon was created in the QGIS software, measuring 250x250m. To define the degree of influence of each of the variables considered, the Analytic Hierarchy Process method was used. Next, maps were created for each of the six variables as well as for the Geodiversity Index. Results and conclusion: The result of the Analytic Hierarchy Process method obtained a consistency rate of 3.7% to determine the weights of each adopted variable. Then the equation can be established to determine the Itabirito Geodiversity Index. Implications of the research: Exactly in areas that presented high to very high IGD, geodiversity hotspots can be determined. The mapping and analyzes carried out confirm that the municipality of Itabirito has regions considered Geodiversity Hotspots. Originality/Value: This work contributes significantly to the knowledge of the geodiversity of the municipality of Itabirito. The establishment of the IGD for the Itabirito territory is relevant to guide the creation of mechanisms to promote geoconservation and geotourism.

Understanding Geodiversity for Sustainable Development in the Chinchiná River Basin, Caldas, Colombia

Geodiversity, comprising both endogenous and exogenous geological processes, plays a crucial role in shaping the structure and functionality of natural systems, alongside its substantial impact on human well-being. However, the often-overlooked interconnection between geodiversity components limits our comprehension of geosystems. In the Chinchiná River Basin (CRB) in Colombia, located in the northern Andes in South America, we established criteria to differentiate geodiversity classes, calculated indices to understand the distribution of geological elements, and discussed systemic relationships. This comprehensive approach lays the foundation for a holistic comprehension of the territory’s structure and functionality. Our findings revealed the convergence in an area of 1052 km2 of 10 rock types, 7 slope ranges, 13 landforms, 5 drainage density features, 610.4 km of faults with 9 kinematic tendencies, 5 soil orders, 5 climate types, a 3328 km surface drainage network with 7 hydrographic orders, 1 underground aquifer, 4 areas with lakes, 2 zones with glaciers, 27 polygenetic and monogenetic volcanoes, and several thermal springs. This discussion explores the implications of various methodologies used to establish the value of the general geodiversity index while also examining the relationships between abiotic elements and their distribution patterns. This forms a fundamental basis for understanding the geosystem services of the basin in terms of regulation, support, and provisioning processes, as well as the culture and knowledge derived from geodiversity. These conceptual elements are indispensable for enhancing the sustainability of a region that is susceptible to the impacts of climate change. Furthermore, they serve as the foundations for the objective’s achievement, as set by the UNESCO Global Geopark project “Volcán del Ruiz”, currently ongoing within the region.

Quantitative Assessment of Geodiversity for Conservation Purposes in Slovenské rudohorie Mountains (Slovakia)

A geodiversity assessment is one of the basic steps in the development of geoprotection activities. It is important to establish parameters that quantify the elements and locations of abiotic nature. Here, the focus is on those who are richer than the average population. In doing so, it is possible to manage areas for the protection of important geoheritage and develop sustainable activities, e.g., geotourism. The monitored territory (Slovenské rudohorie Mts.) lies in southeast Slovakia and occupies an area of 4986 km2. The geodiversity assessment is based on overlaying a grid onto different maps at a scale of 1:500,000, where the final geodiversity index is the sum of six indices calculated in 5 × 5 km grid squares. These indices consist of a geological index, a geomorphological index (composed of two sub-indices: geomorphological subdivision and morphological–morphometric types), a hydrological index (composed of three sub-indices: the type of aquifer, the density of the river network, and the occurrence of springs and mineral waters), a soil index, a tectonic index, and a mineral resources index (composed of four sub-indices: the occurrence of ore, non-ore, construction, and energy resources). The resulting geodiversity index map is presented in the form of five isoline classes: very high (10% of the monitored area), high (28%), medium (32%), low (23%), and very low (7%). The geodiversity map of the territory of the Slovenské rudohorie Mts., together with the indices, creates a useful tool for conservation, management, sustainability programs, and education at the national level. However, Slovak legislation does not mention the concept of geodiversity, its protection, valuation, restoration, or responsible usage. Only its specific forms and processes are preserved as a natural resource supporting biodiversity. Considering the mineralogical richness of the area, some locations with a very high geodiversity may be the focus of mineral exploration. It is very important to set up appropriate landscape management for these sites. Valuable geotopes located in biodiversity cold spots that are not subject to protection within the state’s nature protection program should be considered as small protected areas (up to 1000 ha) at the fourth or fifth level of protection under Act No. 543/2002 Coll. or could form the core areas of a possible Geopark.

Identifying Optimal Cell Size for Geodiversity Quantitative Assessment with Richness, Diversity and Evenness Indices

The importance of quantitatively assessing the spatial patterns of geodiversity, and their intrinsic relationship with biodiversity and the ecosystem services provided to society, has been signalized by several authors, due to the relevance of this information in territorial management, the planning of environmental and conservation strategies. Within geodiversity method assessments, the grid system is the most widely used GIS spatial approach to calculate a geodiversity index. Preferred for its simplicity, it implies the fundamental decision of choosing the scale of the analysis, defined by the selection of cell size, determinant for the accuracy and correctness of the final maps. Although this topic has been occasionally approached by some authors within geodiversity assessments, there is no formal procedure for cell size selection. This is a key issue, and, in the scope of the present work, an empirical procedure to select optimal cell size(s) was tested on the national scale in Portugal, in lithology and geomorphology datasets. The quantitative method based on geodiversity indices was applied, using richness, diversity and evenness indices, in a hexagonal analytical grid, through eight cell dimensions. Several descriptive statistical parameters were analyzed, with particular emphasis on dispersion statistical measures. Optimal cell size corresponded to the minimum cell size, once dispersion values were significatively reduced or stabilized, and distributions from evenness and diversity indices were closer to symmetry, which provided more accurate results and higher spatial differentiation, although the final decision should always consider the main purposes of the analysis.

A Public Participation GIS for Geodiversity and Geosystem Services Mapping in a Mountain Environment: A Case from Grayson County, Virginia, U.S.A.

Geodiversity and geosystem services are essential concepts for conservation efforts in mountain regions. Approaches that integrate both natural and human dimensions of mountain abiotic nature are best suited for this purpose; however, geodiversity research and associated conservation efforts along this vein are still developing. Here, we explore the potential of a public participation GIS, which integrates qualitative surveys with quantitative geodiversity information, to assess possible relationships between geodiversity and geosystem services for Grayson County, Virginia, U.S.A. Specifically, we: (1) used a geodiversity index to model geodiversity for the study area, (2) used a public participation GIS to map geosystem services markers, and (3) visualized geodiversity–geosystem services hotspots to uncover potential relationships between geodiversity and geosystem services values. Participants placed 318 markers, most frequently representing aesthetic (32%), artistic (22%), and educational (15%) geosystem services values. The majority (55%) of these markers corresponded to low and very low quantitative geodiversity index scores. Geosystem services value markers were clustered around population centers and protected areas. Although quantitative geodiversity measures are often used to identify and prioritize areas for conservation, our results suggest that locations valued by respondents would be missed using quantitative metrics alone. This research thus supports the need for holistic approaches incorporating place values to conserve and best understand relationships between people and abiotic aspects of mountain landscapes.

From geodiversity assessment to geosite analysis – a GIS-aided workflow from the Bakony–Balaton UNESCO Global Geopark, Hungary

Abstract Geodiversity and geosite assessments precede geoheritage and geotourism utilization. The process first determines the geodiversity value of an area (based on geoscientific attributions) and then the geotourism potential of the available sites. As a result, significant geosites can be identified, which are the bases for protection and tourism. During geosite assessment, scientific and infrastructural aspects are essential because spectacular sites and landscapes carrying intrinsic or visible values generate interest among tourists and professionals. In this study, a quantitative workflow to determine the geodiversity index over an area, evaluate geosites and monitor significant ones is presented. The study area is the Bakony–Balaton UNESCO Global Geopark, where no quantitative assessment was conducted previously. A GIS-based geodiversity analysis identified the most diverse areas which gave the basis for the geosite assessment done in a ‘geodiverse’ subregion of the geopark. The most important nine of the 75 identified potential geosites were chosen to examine the spatial variance of the assessment. By continuous monitoring, we got an image of what the visitors liked or did not like there. In this way, we were able to monitor the various opinions of geotourists to present unique development strategies for each of them. A connection between the location of geosites and the spatial distribution of geodiversity values was also determined by analysing and visualizing the connection between geodiversity and geosite assessment results.

EVALUATION AND VALORIZATION OF GEOHERITAGE OF THE MOUNT ROGOZNA AREA (SERBIA)

Due to its unique geology, relief, and extensive hydrologic network, Mount Rogozna has been chosen as a case study for the quantification of geodiversity. The study consists of two interconnected parts. The first part demonstrates the application of the geodiversity evaluation method using the geodiversity index, whereas the second part deals with the evaluation of the geoheritage objects of the studied area. The methodology for calculating geodiversity index that was applied in this research was modified due to the size of the studied area. The geodiversity index is calculated based on the number of abiotic elements and the roughness of the relief within the studied area. Mount Rogozna, with an area of 818.26 km2, has been studied and processed using a network of spatial polygons of 500 × 500 m and using different maps. The second part of the research deals with the evaluation of geoheritage objects, applying the Geosite Assess-ment Model. The obtained results demonstrate that geoheritage objects are not always located in places with high values of the geodiversity index. This is proven by the fact that 5 out of 7 geoheritage sites are located in areas with low geodiversity values. The obtained qualitative and quantitative data with maps showing the distribution of geodiversity can serve as a starting point for the development of a planning and management strategy, but also as the example of good practice for possible further application in the quan-tification of geodiversity in this part of Serbia, and beyond its borders as well.

Quantitative Assessment of Spatial Pattern of Geodiversity in the Tibetan Plateau

Geodiversity is considered a new tool to exploit the resources of regional and local geotourism. Hitherto, few assessments of geodiversity have been conceived for huge geographic units. The spatial pattern of geodiversity in the Tibetan Plateau (TP) is the purpose of this study. A total of 96 abiotic units in six geo-groups of hydrology, pedology, landform, elevation, geology, and geosites were quantified and normalized to assess the geodiversity index. Geosites that represent interdisciplinary and specific abiotic elements are included as an independent component in the parameters of geodiversity assessment. The TP was divided into 1145 areas by fishnet, for counting of abiotic units, geodiversity calculation, and visualization of findings. The results indicated that the Pamir Plateau, Mt. Kunlun, the Delingha area, Mt. Qilian, the Xining area, Langmusi Town, Mt. Siguniang, Mt. Hengduan, the Nyainqentanglha Range, and the Lhasa area are the zones with very high geodiversity. The low geodiversity areas are mainly concentrated in the Qaidam Basin, the Qingnan Plateau, and the South Tibet region. In the TP, international tourist destinations such as UNESCO World Natural Heritage Sites and Global Geoparks, are developed in areas of high geodiversity. The spatial pattern of geodiversity could be indicative of geotourism potential, and be used to guide the development planning of geotourism in the TP. The quantitative assessment of geodiversity also provides a new parameter for geoconservation in China.

Criteria for Selecting Areas to Identify Ecosystem Services Provided by Geodiversity: A Study on the Coast of São Paulo, Brazil

Ecosystem services are essential for life. Despite traditionally focusing on biodiversity, several studies have presented the ecosystem services provided by geodiversity. However, the choice of the study area is still a step that raises doubts for the researcher. Several elements of geodiversity must occur in the area so that different ecosystem services can be identified. Thus, the selection of the study area is a crucial step of the research. This work aims to determine the criteria for the selection of potential areas for the identification of ecosystem services by geodiversity in Baixada Santista, central coast of São Paulo, Brazil. The criteria established were (i) characterization of the physical environment based on the geodiversity index map and the watershed map and (ii) description of land use based on the characterization of land use and analysis of territorial planning instruments. As a result, the watershed with high levels of geodiversity and diversity of land uses was selected. The criterion was important, as it is an area already used in soil management and different land uses can provide a variety of ecosystem services. Thus, these criteria proved to be effective in the selection of areas for the evaluation of ecosystem services by geodiversity.

Is It Worth Assessing Geodiversity Numerically? A Comparative Analysis between Quantitative and Qualitative Approaches in Miguel Pereira Municipality, Rio de Janeiro, Brazil

The interest in the cartographic representation of geodiversity has grown in recent years. However, the application of geodiversity maps in nature conservation and territorial management policies is still under study, especially concerning quantitative methodologies and geodiversity indices. Aiming to contribute to this topic, a set of correlation analyses were performed between quantitative and qualitative maps, as well as correlations between these and sites of geological interest, land-use, and vegetation maps using Miguel Pereira municipality, Rio de Janeiro, Brazil, as a study area. A geodiversity index map (quantitative approach) was used, and a geodiversity map (qualitative approach) was produced based on GIS procedures and tools through a counting technique and the association between landforms and, geology, soils, and hydrology, respectively. The geodiversity map showed a better correlation between geodiversity and the other nature and anthropic elements, while the quantitative assessment, although having a positive correlation with those elements, showed a weak or very weak correlation. The cartographic outputs in geodiversity units (qualitative approach) best supported this correlative analysis highlighting its use in land-use and nature conservation management. In contrast, the geodiversity index map showed complementary information and could be combined with the qualitative approach for more sustained results.

Exploring Ocean Floor Geodiversity in Relation to Mineral Resources in the Southwest Pacific Ocean

The future extraction of mineral resources may irreversibly damage ocean floor geodiversity in the Southwest Pacific Ocean. Therefore, understanding of the spatial distribution of ocean floor geodiversity in relation to mineral resources is important. For that purpose, we first developed a geodiversity index map of the western Pacific Ocean including spatial information of openly available digital layers of four components: seafloor geomorphology, sediment thickness, bathymetry and seafloor roughness. Second, we analysed how these components contributed to the geodiversity index. Finally, correlations between three mineral resources (seafloor massive sulphides, polymetallic nodules and cobalt-rich crusts) and the geodiversity index, its components, and the ocean floor age were calculated. The results showed that the ocean floor environment and the time necessary for the formation of the three mineral resources were predominantly related to the bathymetry component and the age of the ocean floor, and to a lesser extent to the seafloor roughness, geomorphology and sediment thickness components. We conclude that the ocean floor geodiversity index and its components contribute to an improved understanding of the spatial distribution of abiotic seafloor diversity and can be optimized by using higher resolution data. We suggest that ocean floor geodiversity could be considered in future resource extraction to support responsible mining and help limit environmental damage.

Geodiversity assessment to regional scale: Ecuador as a case study

Geodiversity is the variety of earth materials, forms and processes that constitute and shape the Earth planet. Therefore, geodiversity includes essential for developing nature-based solutions and must be adequately characterised. This research aims to evaluate the geodiversity of Mainland Ecuador by estimating a Geodiversity Index, which is the sum of five partial indexes (Lithological, Geomorphological, Paleontological, Pedological, and Mineral occurrences), in a 25 × 25 km grid. In addition, the study shows and analyses the geodiversity index map obtained as a basis for the development of policies for the use and conservation of geodiversity. The cartography developed generally illustrates the distribution of the geological diversity existing in Ecuador. Specifically, the ranges of the indices reached in the geodiversity map, including the medium, high, and very high categories, corresponding to 47.52 % of the extension of Ecuador using the Pereira method and to 52.91 % using the procedure proposed in this study. These special categories are located mainly along the Andes Mountain range and in the newly formed mountain ranges in the coastal zone. In addition, these categories defined in the geodiversity map coincide, spatially, with the main initiatives of geoparks and geo-routes catalogued in the country. The maps generated and the estimated indices represent relevant tools in territorial planning and calculated future geoconservation strategies. Furthermore, a series of initiatives are proposed to develop a policy favouring the characterisation, use and protection of geodiversity.

Assessment of geodiversity of Parbati River Basin in North-Western Himalayan region, India

In light of structural and functional linkages between the geodiversity and biodiversity, mapping geodiversity becomes more important in highly pristine and diverse regions such as Hindu Kush Himalayas as it could lead to better nature conservation strategies. This study represents pioneering efforts in the field of quantitative assessment of geodiversity and its mapping in Parbati River Basin (PRB) using grid overlay. Geodiversity index (GI) so generated was finally interpolated using inverse distance weighting (IDW) model, which resulted in the generation of an isoline map showing spatial distribution of various geodiversity classes in the PRB. The higher GI in the Lower basin is mainly due to rich lithological elements whereas the very high values in the Upper basin can be attributed to geomorphological richness. All these features are facing constant threat due to continuous degradation and damage caused by various anthropogenic activities in the PRB.

Towards Transferable Use of Terrain Ruggedness Component in the Geodiversity Index

Geodiversity, as diversity of the abiotic environment, includes terrain ruggedness (or roughness), which is one of the essential parts of geodiversity evaluation. The terrain ruggedness index (R) represents the value of one of the main geodiversity components. The purpose of the study is to discuss the characteristics of R in the scope of geodiversity, and to show how R differs within two specific study areas if we study them using a data scale that covers both areas and only site-specific data. Hence, the main methods include geodiversity element mapping, calculating R based on either the study area or broader-scale data and discussing the differences that arise. The findings show that R should not be calculated only within individual study areas if the results among different study areas are to be compared; rather, it should first be calculated on a larger scale for the whole region in which we are about to compare the specific study areas. The applied value of these results is that such data are then suitable for calculating the geodiversity index (G) according to specific methodological steps and for further analyses.

Avaliação em escala regional da geodiversidade da Aglomeração Urbana do Sul e seus municípios, litoral do Rio Grande do Sul, Brasil.

The understanding of the relationships between abiotic components and these with the natural system, especially in coastal areas and densely occupied areas, such as urban agglomerations, has been important to support policies of conservation, preservation, and sustainable regional development. In this sense, the aim of this study was to carry out an assessment on a regional scale of the geodiversity of the Urban Agglomeration of the South (AUSul), the coast of Rio Grande do Sul and its constituent municipalities, through a geodiversity index and the occurrence and distribution of its elements in the region. To construct the index, the abiotic elements considered most relevant for the region’s characteristics and the availability of data approximately compatible with the 1:250,000 scale was qualitatively defined. Subsequently, they were treated with methods of map algebra, resulting in the maps of the sub-indices related to geology, topography and geomorphology, hydrography and soils per municipality, and the geodiversity index of each municipality and the region. The results indicate the municipalities located on the Sul-Rio-Grandense Plateau and at the interface with the Coastal Plain with the highest indexes, being influenced by the greatest diversity of geological units, relief types, altimetric variations, and hydrographic features. Despite the significant occurrence of large wetland areas in the Coastal Plain municipalities, their indices were the lowest. The study proved to be useful for the understanding of the geodiversity of the AUSul, pointing out areas for studies at larger scales and macro-zoning, in addition to the need for complementation with methods that incorporate subjective characteristics of geodiversity.