Left Tributary Research Articles

Digital elevation model and satellite images an assessment of soil erosion potential in the Pcinja catchment

Pcinja is large left tributary of Vardar River (135 km long, 2877,3 km2 catchment?s area), which drainages surface waters from northeastern Macedonia, and small part of southeastern Serbia. Because of suitable physical-geographic factors (geology, terrain morphology, climate, hydrology, vegetation coverage, soil composition, and high human impact), some parts of the catchment?s suffer significant erosion process. For this reason, it is necessary to research properly spatial distribution of erosion, then influence of physical and anthropogenic factors for the intensity of soil erosion, related erosion landforms (with morphology, genesis, evolution, soil erosion protection etc.). Earlier researches in the area have been performed generally with combination of cartographic and classic field analysis. But in last decades, there are new possibilities available like satellite images and digital elevation models. In this work has been presented the methodology of utilization of satellite images and DEM for erosion research, with analysis and comparisons of outcome data.

Geomorphological and pedological investigations on the glacial history of the Kali Gandaki (Nepal Himalaya)

In semi-arid orographic left tributaries of the Kali Gandaki at the northern and western flank of the Nilgiri Himal, glacio-geomorphological and pedological investigations were carried out on prehistoric moraines. Geomorphological relief analysis was derived from other literature and the own fieldwork of the author. The resulting glacial chronology was used as benchmark to explore the limits of different pedological dating methods regarding the degree of soil development. These methods are based on iron fractionation, total element contents and particle size distribution. In general the different glacial stages are mirrored correctly in the relative graduation of soil development. The ratio of well crystallised pedogenic iron-oxides to the total iron content and the ratio fine clay to total clay are most suitable, because they are almost independent from existing changes in the lithological composition. The total element based weathering indices are less suitable, because they react highly sensitive to the geology dependent shift to higher carbonate content. Most of the grain size based weathering indices are inapplicable because of the typically high textural variability within till deposits.

BIOINDICATION OF HEAVY METALS WITH AQUATIC MACROPHYTES: THE CASE OF A STREAM POLLUTED WITH POWER PLANT SEWAGES IN POLAND

The Kozi Brod (left tributary of the Biala Przemsza, east of Katowice) flows in a highly industrial coal-mining area dominated by the power plant of Siersza. Concentrations of the microelements nickel (Ni), chromium (Cr), cobalt (Co), zinc (Zn), manganese (Mn), lead (Pb), cadmium (Cd), copper (Cu), barium (Ba), aluminum (Al), vanadium (V), and strontium (Sr), as well as the macronutrients nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), and sulfur (S), were measured in water and plants of the Kozi Brod. The collected plants were: Myosotis palustris L. Nathorst, Galium palustre L., Mentha rotundifolia L. Huds., Mentha aquatica L., Berula erecta (Huds.) Coville, Cardamine amara L., Epilobium angustifolium L., Geranium palustre L., Lysimachia vulgaris L., Crepis paludosa L. Much., Calitriche verna L., Solanum dulcamara L., and the aquatic moss Hygrohypnum ochraceum (Turn.) Loesk. These plants were used to evaluate the spatial distribution of elements in the Kozi Brod and contained elevated levels of Co, Cd, Zn, Ni, Mn, Al, Pb, and Cu. Significant correlations between concentrations of Cd, Zn, and Mn in water and plants indicate the potential of these species for pollution monitoring.

Badenian mollusks from Rachitova (Hateg Depression, Romania)

The paper presents in systematic order the mollusk assemblage collected from one outcrop on Lacului Brook (left tributary to Răchitova Valley). There were identified 33 taxa (22 gastropods, 9 bivalves and 2 scaphopods) and the whole assemblage is characteristic to the Badenian deposits in the studied area.

Quaternary Terraces of the Berounka River

The paper brings geomorphological characteristic of Neogene sediments and Pleistocene terraces of the Berounka (the left tributary to the Vltava). The localities of Neogene fluvial and fluvial-lacustrine sediments of Lower Miocene Age are clean-cut and neotectonically dislocated. The Pleistocene terraces (13 levels in 7 groups), diverging downstream, have been incorporated into the stratigraphical Pleistocene system.

Caucasica in the History of Mayyāfāriqīn

MAYYĀFĀRIQĪN, a small town situated on one of the left tributaries of the Tigrīs, at 70 km. to the north-east of Āmid (Diyārbakr), owed its importance to its situation on a short road connecting Armenia (Mush) with Upper Mesopotamia. It is probable that the ancient capital of Armenia, Tigranocerta, built by Tigran II circa 80 B.C., stood in the immediate neighbourhood of MAYYĀFĀRIQĪN.In Islamic times Mayyāfāriqīn had a historian, Ahmad b. Yusuf b. ‘All ibn al-Azraq al-Fāriql, who wrote shortly after 572/1176. The only two copies of this curious work belong to the British Museum. The detailed description of the work and the first systematic presentation of its contents belong to that accurate British historian H. F. Amedroz, who has so considerably increased our knowledge of the medieval Arabic sources for the Near East. Numerous passages from Ibn al-Azraq are quoted by Amedroz in the footnotes of his edition of Ibn al-Qalanisi (1908). In more recent years M. Canard has published six passages of the history of Mayyāfārīqīn relative to Sayf al-daula and Claude Cahen has summed up its rich information on the early Artuqids.These preparatory works will greatly help the future editor of the Mayyāfārīqīn chronicle. His task will not be easy, for the two versions are defective and divergent, and the best plan will be to print them in parallel columns. The script of Or. 6310 is very cursive and devoid of dots; that of Or. 5803 is defaced towards the end. The scribes were negligent even in geographical and personal names. The grammar of the author (or of his copyists) is lax and may occupy the attention of some student of vulgar Arabic in Upper Mesopotamia.

Traces of Proterozoic Glaciation in the Southern Part of Central Siberia

Research Article| September 30, 1932 Traces of Proterozoic Glaciation in the Southern Part of Central Siberia A. N. TCHURAKOV A. N. TCHURAKOV †Introduced by V. A. Obruchev. Search for other works by this author on: GSW Google Scholar GSA Bulletin (1932) 43 (3): 581–602. https://doi.org/10.1130/GSAB-43-581 Article history received: 01 Mar 1932 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation A. N. TCHURAKOV; Traces of Proterozoic Glaciation in the Southern Part of Central Siberia. GSA Bulletin 1932;; 43 (3): 581–602. doi: https://doi.org/10.1130/GSAB-43-581 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search nav search search input Search input auto suggest search filter All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract General GeographyThe territory which is the subject of this report is situated in central Siberia immediately south of the Great Siberian Railway between latitudes 52 degrees and 56 degrees North and longitude 86 degrees and 98 degrees East (from Greenwich). As shown on the sketch map (figure 1) the Yenissei River flows through the middle of the area from south to north.The middle part of this territory, named the Minussinsk basin, represents an undulating steppe, drained by the Yenissei, the Abakan and the Tchulym rivers, tributary to the Ob.1To the west rises the Kuznetsk Alatau Range, drained by the left tributaries of the Yenissei River and the right tributaries of the Tom River. This strongly dissected massif is covered by a dense forest (taiga), the mountains in its central part (in the upper courses of the rivers Tchulym and Tom) rise above the timberline, and their slopes . . . This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not currently have access to this article.

Euclase and platinum from diamond-washings in British Guiana

The euclase here described is not only from a new locality, but it represents an entirely new type of habit for this rare mineral, which is occasionally used as a gem-stone. The crystal aggregates present a strange resemblance to fossils, and fossils not having been found in British Guiana they were submitted to the Geology Department of the British Museum by Mr. R. P. Stewart of Georgetown, Demerara. They had been found by Mr. J. C. Menzies whilst engaged in washing for gold and diamonds in the neighbourhcod of the Kaieteur gorge on the Potaro river, a left tributary of the Essequibo. Both of these gentlemen have interested themselves in the matter and have kindly sent further material for examination.

Geographical Notes

LIEUTENANTS KUND AND TAPPENBECK have been conducting an expedition into the Cameroons interior during the latter part of 1887 and the beginning of the present year. Starting from Batanga they succeeded in penetrating as far as 12° 30′ W. long., when, being attacked by Soudan Negro traders they were forced to retreat., both of them seriously wounded. They succeeded in tracing the course of the Beundo or Njong River far into the interior, and brought back much information concerning the people and the products of the country. With regard to general results, they found that the water-parting between the rivers that discharge in the Cameroons region and those that flow into the Congo Basin lies not near the coast as has hitherto been supposed, and therefore it is hoped that a navigable route may be discovered that will lead well into the interior. The water-parting between the left tributaries of the Binué and the rivers in the German Cameroons also lies far in the interior. The division between the Soudan Negroes and the Bantus is not to be looked for in the direction of Adamawa, but southwards is formed by the Zannaga River and eastwards lies at a distance of 150 miles from the coast. Lieutenants Kund and Tappenbeck assert that the area of Mohammedan influence extends much farther south than has hitherto been thought. No signs of volcanic action have been met with as far as the Zannaga River or in the mountains to the north. The profile which accompanies the report shows a coast plain about 70 feet high, succeeded by a sharp slope rising to a height of from 3000 to 4000 feet, beyond which the country slopes gradually to the inner African plateau, about 2500 feet above the sea.