Oak Grove Research Articles

Evidence for a sedimentary origin of clay minerals in the Mawrth Vallis region, Mars

Research Article| October 01, 2007 Evidence for a sedimentary origin of clay minerals in the Mawrth Vallis region, Mars Joseph R. Michalski; Joseph R. Michalski 1Jet Propulsion Laboratory, M.S. 183-501, 4800 Oak Grove, Pasadena, California 91109, USA Search for other works by this author on: GSW Google Scholar Eldar Z. Noe Dobrea Eldar Z. Noe Dobrea 2Malin Space Science Systems, P.O. Box 910148, San Diego, California 92121, USA Search for other works by this author on: GSW Google Scholar Geology (2007) 35 (10): 951–954. https://doi.org/10.1130/G23854A.1 Article history received: 15 Mar 2007 rev-recd: 04 Jun 2007 accepted: 06 Jun 2007 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Joseph R. Michalski, Eldar Z. Noe Dobrea; Evidence for a sedimentary origin of clay minerals in the Mawrth Vallis region, Mars. Geology 2007;; 35 (10): 951–954. doi: https://doi.org/10.1130/G23854A.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Clay minerals detected spectroscopically in the Mawrth Vallis region of Mars correspond to a complex, layered, thick (>600 m) stratigraphic section of ancient bedrock. Because the light-toned, clay-bearing rocks are lithologically diverse over a broad area (>80,000 km2), have significant internal layering and complexity, and contain buried impact craters within the section (demonstrating that they were deposited over a geologically significant duration of time), we interpret the host rocks as sedimentary or possibly pyroclastic. Crater counts date the clay-bearing rocks to early-middle Noachian time (estimated as 3.8–4.1 Ga). Geomorphic observations suggest that the rocks were lithified early and deeply eroded during the late Noachian–early Hesperian. The combination of a probable ancient sedimentary context of the clays and a moderate pH formation environment implied by the occurrence of smectites clearly places these rocks among the most important targets for future astrobiological exploration. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

Ammonia and ammonium measurements from the southeastern United States

Twenty-four-hour integrated gaseous NH 3 and fine particulate ( PM 2.5 ) NH 4 + were measured during 2004 at eight sites in the southeastern U.S. Mean NH 3 concentrations for 2004 ranged from 2.44 ppbv at an urban-industrial site in North Birmingham, AL, to 0.23 ppbv at a rural-forested site near Centreville, AL. NH 3 mixing ratios were found to be higher at urban sites than at nearby rural (or suburban sites) except for sites which were directly influenced by local sources. Only weak correlations with temperature were observed for NH 3 at the sites; slightly greater correlations were observed for total ammonia ( NH x = NH 3 + NH 4 + ) vs. temperature. A weak seasonal variation was observed for NH 3 mixing ratios at all sites, with all but one site exhibiting biannual maxima in spring and late summer/fall. Mean PM 2.5 NH 4 + concentrations ranged from 1.78 μ g m - 3 in Atlanta, GA, to 1.02 μ g m - 3 at Oak Grove, MS, and were more uniform across the network than NH 3 mixing ratios, with only slightly larger values at urban sites as compared to nearby rural (or suburban) sites. All sites exhibited highest NH x between July and September and lowest NH x in November and December. The gaseous NH 3 fraction ( NH 3 / ( NH 3 + NH 4 + ) ) was observed to decrease with increasing values of PM 2.5 SO 4 2 - at all sites. At two rural-forested sites and two sites near the Gulf of Mexico, the NH 3 gaseous fraction approached a relatively constant value of 5–10% as PM 2.5 SO 4 2 - increased beyond 5– 7 μ g m - 3 , suggesting that NH 3 availability at these locations limits aerosol neutralization.

Bois de l'Hôpital, une réserve forestière à interventions particulières | «Le Bois de l'Hôpital»: a forest reserve for special intervention

Within the framework of its sustainable development policy(Agenda 21), the city of Neuchâtel has created a number of forest reserves among others «le Bois de l'Hôpital», which covers an area of roughly 100 ha and is destined for special intervention. The perimeters of the woods consist of a rich mosaic of rare plant societies including very special forest stands (oak groves, various deciduous species and European black pine resulting from earlier afforestation). The absence of exploitation has led to a strong densification of certain massifs and the disappearance of a dry lawn in the «garides». First tending measures and the opening of clearings between 2002 and 2005 have been very beneficial to the diversity of flora and fauna,especially the insects.

El paisaje vegetal de la Sierra de Juan Robre y Jana (Oriente de Asturias)

This paper is aimed at studying the vegetal formations found in a middle altitude ridge on Eastern Asturias. The characteristics and current distribution of these formations result from a combination of factors such as the climate, the relief, the soil and the systematic human action. Particularly relevant are the beech forests, the evergreen holm oak and the willow groves. Mixed forests of atlantic deciduous leaves species are properly represented, as well as chestnuts and oak groves. However, the most extended vegetal formations are heathers, gorses, ferns and pastures, as a consequence of traditional agricultural practices.

Copper Complexing Capacity of Throughfall and its Environmental Effect

Copper complexing capacity (CuCC) and conditional stability constants (K′) of the complexes were analyzed for throughfall collected in Japanese cypress (Chamaecyparis obtusa), Japanese cedar (Cryptomeria japonica), Japanese red pine (Pinus densiflora), and bamboo-leafed oak (Quercus myrsinaefolia) groves (soil: light-colored Andosol) located in a suburban area of Japan (Tsukuba, Ibaraki). The method was based on the titration of throughfall samples with standard Cu2+ solution using a Cu2+-selective electrode, followed by data analysis using the van den Berg-Ruzic plot (1:1-type complexes were assumed). CuCCs (μM) obtained were in the order: C. obtusa (7.1± 5.1) ≤ C. japonica (9.6± 5.6) < P. densiflora (15.9± 16.4) < Q. myrsinaefolia (29.3± 23.9). In addition, ratios of CuCC/DOC (μmol mg−1 C) were in the order: C. obtusa (0.42± 0.26) ≅ C. japonica (0.42± 0.22) ≅ P. densiflora (0.55± 0.38) ≪ Q. myrsinaefolia (2.0± 1.3), and the ratios in the throughfall of Q. myrsinaefolia were about 4 times higher than those in the throughfall of other tree species. On the other hand, log K′ was almost the same for all tree species (about 5.5). CuCC and also CuCC/DOC increased in spring and autumn, and decreased in summer and winter, indicating that organic matter with metal complexing capacity, released from trees, changed seasonally not only in quantity but also in quality. Since throughfall accelerated the leaching of metals from grove soil and artificial material (e.g. alloy) placed in the groves, it may be involved in the behavior of metals in the plant-soil ecosystem.

Regional Analysis of Nonmethane Volatile Organic Compounds in the Lower Troposphere of the Southeast United States

Nonmethane organic compounds (NMOCs) along with ozone as well as other trace gas and meteorological parameters were measured at eight rural sites located in the Southeast United States, as part of the Southern Oxidants Study. Fifty-four C2C10 NMOCs were collected from 1,2001,300 local time, once every six days from September 1992 through October 1993 and intermittently during 1994. This study was undertaken to characterize the nonmethane hydrocarbons in the rural areas of Southeast United States with respect to their concentrations, reactivities, and relative importance of natural and anthropogenic abundances of NMOCs. Though the sites are well removed from large urban source regions, the observations show a clear anthropogenic influence on the hydrocarbon levels at these rural sites. The data for the sites show similar seasonal patterns for total NMOC with summer maxima (average concentrations of 198 ppbC at the Long Creek, South Carolina, site to 47 ppbC at the Candor, North Carolina site) and fall minima (average concentrations of 73 ppbC at the Long Creek site to 31 ppbC at the Centreville, Alabama site). A secondary maximum is observed during the winter. A seasonal trend was observed in the concentrations of light molecular weight C\d2–C\d4 NMOCs (ethane, ethene, acetylene, propane, \ii-butane, and \in-butane) with a winter maximum and a summer minimum. An analysis of changes in C\d2–C\d4 hydrocarbon ratios over a period of one year indicates that the variation is most likely due to seasonal changes in OH concentrations. A seasonal trend was also observed for the biogenically emitted NMOC, isoprene, with summer maxima (average concentrations of 37 ppbC at the Long Creek, South Carolina, site to 8.6 ppbC at the Giles County, Tennessee and Metter, Georgia, sites) and winter minima with winter seasonal values below the level of detection. Isoprene was observed to be the most dominant NMOC at most sites during the summer. The ambient concentrations of isoprene measured during the summer were found to be dependent on the ambient temperature. The monoterpenes \ia-pinene, \ib-pinene, and \id-limonene also peaked during the summer with averages ranging between 3.19 ppbC (Centreville, Alabama) and 6.38 ppbC (Oak Grove, Missouri), and a background concentration of 1.25 to 1.9 ppbC for all the sites during the winter.

First City: Philadelphia and the Forging of Historical Memory (review)

Book Reviews61 Style. Several ofNew England's Chapel Style FMHs have cornerpilasters attached to a frieze, providing a regional distinctive touch. Gothic versions of the type date to the 1895-1910 era, and a single example of the Akron Plan was constructed at Oak Grove, Maine. Twentieth century FMHs (1920-2000) display little architectural cohesion. Since the book's publication, people have forwarded additional information to Silas, fueling the possibility of a second edition. Silas has also been in contact with other historians ofQuaker architecture. As a result, an expanded version would undoubtedly use the emerging typology rather than using terms from residential architecture (Georgian, Cape). Whether or not a new version materializes, New England Quaker Meetinghouses is an excellent resource for Friends historians, genealogists, architectural historians, and libraries. Seth B. HinshawDowningtown, Pa. First City: Philadelphia and the Forging ofHistorical Memory. By Gary B. Nash. Philadelphia: University of Pennsylvania Press, 2001. 383 pp. Illustrations, notes, index. Cloth $34.95. When Independence National Historical Park recently revealed its plans to build a new home for the Liberty Bell on the site of the slave quarters built by George Washington, Gary Nash led the charge of historians and community leaders who forced the Park Service to review and rework the interpretation of the site in order to recognize and remember Washington's slaves. Anything less, according to Nash, would be "murdering historical memory." Nash lives on the "cutting edge" of the field. He was among the first historians to challenge the old guard and their monochromatic approach to history, with its emphasis on great white Protestant males, by emphasizing the contributions oflittle-known people: African Americans, Native Americans , women, and other minority groups. His grass-roots approach, which once made him an outsider among the ivory tower establishment, has, today, made his work popular with those museum educators, public historians, and scholars who want to redefine the field in ways that go far beyond the dry, vocabulary-controlled interpretations of academics to a more engaging and inclusive approach. First City: Philadelphia and the Forging ofHistorical Memory is Nash's most recent gift to public history. Nash makes a compelling argument that Philadelphians, beginning in 62Quaker History the late eighteenth century, actively "participated in transmitting historical memory from one generation to another." Some were members of elite cultural institutions, such as historical societies and museums. Others belonged to relatively anonymous groups, such as women, blacks, and laborers. Regardless of their social and/or economic background, they engaged in memory-making in ways that "carried our their own ideological , cultural, and politically-informed agendas." (Page 8). Nash proves his case by exploring key eras in Philadelphia's eighteenth - and nineteenth-century past—early colonization, the American Revolution, early Republic, antebellum reform, Civil War, and Reconstruction —synthesizing a broad body ofsecondary literature, including his own scholarship. Just as insightful is Nash's familiarity with and interpretation of the artifact and manuscript collections of such institutions as the Library Company of Philadelphia, the American Philosophical Society, the Pennsylvania Academy ofthe Fine Arts, and the Historical Society of Pennsylvania. Perhaps the finest illustration ofdifferences in the construction ofPhiladelphia 's historical memory are the contrasting approaches of John Fanning Watson and George Lippard. Watson, the patrician founder of the Historical Society of Pennsylvania, sought to glorify the most prominent figures of the past by collecting their personal belongings, paintings, and manuscripts. For Watson, William Penn's Bible, a gateleg table from his country estate at Pennsbury, and the wampum belt presented to the Pennsylvania proprietor by a Lenape chief at the Shackamaxon treaty gathering , became engaging portholes to view Penn's almost mythological attempt to create a utopia in the wilderness for the persecuted peoples of Europe. But Watson's approach delivered the message that "great men make history and ordinary people follow their lead." (Page 18). On the other hand, Lippard, founder of the socialist Brotherhood ofthe Union, gave such "polite history" a bad name by celebrating the radical antecendents of Industrial Philadelphia and the common man's contributions to shaping the past. (Page 216). In Washington andHis Generals; or Legends ofthe American Revolution (1847), Lippard presented the War of Independence as a poor man's war...

Quinton

Quinton I have to run, an appointment with Quinton at three. You know, Dr. Kettering, the best doctor in Oak Grove. Just a blood-pressure checkup, but I'm apprehensive, my first visit to his office. He was a smart-aleck in school, glib, cocky, almost fresh. Hasn't changed, I hear. Well, that's not quite true. He has moved to the biggest house in Mayfair Acres, a world away from the square shack where he grew up. Scholarships and hard work moved him across town; knowledge and skill keep him there. I'm not going to him because he was a former student, nor because he's the best. I once saw the real Quinton. Not cocky, but vulnerable. A scared little boy. He was in my room when they came to tell him fire had swept through the garment factory 72 73 ...

Sobre Botorrita IV

A study of this newfound Celtiberic bronze tablet whose content is akin to the one of Botorrita I. The author accepts or criticises, according to the cases, some interpretations of F. Villar - C. Jordan, and also some ones which he himself had formerly proposed. Tiricantam is the name of a sacred oak grove ( berkunetakam ), the seat of the senate of the tribal confederation of Contrebia Belaisca, which was without doubt the author of the stipulations engraved in the tablets. He accepts turuntas ‘torrent’, the Huerva at the foot of the hill of Botorrita. And he studies specially the agricultural and live stock vocabulary of the tablets, which remains in the modern name Botorrita ≺ *Gʷoto-prtom , or ‘ford of the cows’, ‘Oxford’. It was the ford on the Huerva, before climbing to the acropolis where the sacred precinct lay.

Artisanat potier et exploitation du bois dans les chênaies du nord de Montpellier au XIIIe siècle (Hérault, Argelliers, Mas-Viel)

The program of excavation pursued in the area of the “Roc de Pampelune” in Argelliers, a settlement established and fortified in the VIth century A. D. and reoccupied in the XIIIth, has been associated since 1999 with a more general research concerning the occupation of the oak groves in the back-country of Montpellier during the Middle Ages. To this end, a recovery excavation was led on the summit of Mas-Viel hill where surveys had allowed the pinpointing of several red ceramic ovens. One of these ovens was able to be studied, and dated with radiocarbon to the years 1220-1287. The study of about 21000 fragments of ceramic, attributed to at least 851 different items, allows us for the first time to define typological outlines of an until-now little studied original production from the Languedoc. The botanical identification of 890 charcoal pieces and the dendrography of 79 pieces of several centimetres are evidence to the use of 8 species, mainly the Holm oak, the Box tree and the Filaire and/ or Alaterne, which were in the form of calibrated bundles of sticks. The composition of afforestations, the age and the calibre of stalks allow a rather precise evaluation of the rhythms of cutting the copses of Holm oak, including supplying combustible material to the other handicrafts. Finally, the setting up of the workshop near Valène wood acquired by the consuls of Montpellier in 1215 allows us to envisage that this ceramic ware occupied a privileged place on the table in Montpellier.

Dendrological park Alexandria. The specific features of the original and the new territories

The article offers topographic and landscape maps of the dendropark Alexandria, the map of its wooded areas (given separately for its historically inherent and newly added (1998) territories) and also the map of the territory surrounding the palace. The article reviews two possible ways of original oak grove degradation.

Revision of the Architectonicidae (Gastropoda: Allogastropoda) from the Miocene Chipola Formation, Oak Grove Sand, and Shoal River Formation of northern Florida, with descriptions of four new species

Revision of the Architectonicidae (Gastropoda: Allogastropoda) from the Miocene Chipola Formation, Oak Grove Sand, and Shoal River Formation of northern Florida, with descriptions of four new species

Jim Burden's Lost Worlds: Exile in My Antonia

Milan Kundera, one of this century's notable exiles, suggests that the of man against power is the struggle of memory against forgetting (3). My Antonia, Willa Cather's great novel of exile and longing, recounts just such a struggle in the lives of the Virginian, Bohemian, Russian, Swedish, Louisianan, and other far-flung wayfarers moving through the new-world wilderness of her fictional Nebraska. Caught in the momentum of shifting allegiances--to the past and to the future--Cather's migrants, and especially her narrator Jim Burden, embody the conflicts of individuals trying to straddle opposing worlds. While the old world survives in story and song and finally makes a home for itself in the very novel that Jim Burden creates and that we in turn read, the new-world impulse expresses itself in mobility and forgetfulness. Cather opens My Antonia with a frame introduction that establishes this paradigm of mobility. Spoken by an unnamed narrator who encounters her old childhood friend, Jim Burden, as they are both making the trek west from their adult homes in New York City, the opening scene not only forecasts the opening of the novel proper--the 10-year-old Jim Burden's train ride from Virginia to Nebraska--but also highlights its constructed quality. The train of the frame introduction that flashes through interminable miles of ripe wheat is replicating Jim Burden's original journey. What he and the frame narrator agree on in recollection, however, when confronted with the physical fact of the landscape, seems to contradict both the energetic movement of the speeding train and the nostalgic tone of much of narrative that follows. The red dust blanketing everything, the intense heat, the burning wind, the wilting oak groves, the stifling vegetation, and, above all, the sense of being buried in wheat and corn suggest oppressio n, paralysis, submergence, and loss of vitality, rather than the new-world alternatives of discovery, or recovery. The incongruous relationship between the sentimental journey homeward and the unpleasant reality of home sets up the binary dynamic of the novel, a tension that operates on all levels. [1] In the image of the train traversing the static landscape, Cather manages to convey this clash of worlds: the interior and the exterior, the real and the imaginary, the moving and the still, the free and the determined, the past and the present, the lost and the found, the old and the new. The particular texture of My Antonia comes from the freight of associations, often contradictory, that Cather allows the clash of worlds to bear. First, in the classic American context, old and new worlds automatically suggest Europe and America, the dynamic that still holds for the novel's immigrant populations. Western expansion saw this archetypal pattern replayed in the frontier myth. The narrative is further complicated by the fact that Jim's adult journey, while spatially a reenactment of the pioneer's westward quest for new worlds , is, emotionally, a nostalgic attempt to recover a personal old world. Jim Burden vacillates between contesting worlds, the old romanticized one that has been sealed away in memory and the new world in which the real life is lived. In the fluid society of the frontier, he abandons successive new worlds, relegating each in its turn to the domain of memory, where it takes on the static, perfected quality of an image in the mind. Left behind each time he crosses a spatial or social boundary is the old, cast-off, and not so portable self. As the fictional narrator loops back in space along the little circle (238) of experience, he attempts nothing less than the impossible: the recovery of the lost time, the lost worlds, the lost selves of his own history. Unlike Proust, who, attempting a similar project, imagines a parade of past selves, mois successifs, to be reclaimed, Jim Burden can neither connect nor integrate his own lost identities. The Jim Burden who steps off the transcontinental train into the utter darkness (6) of Nebraska is already redundant, a sequel to the original boy left behind in Virginia and perhaps still dwelling at the sheepfold down by the creek (8). …

Structural control of coalbed methane production in Alabama

Thin-skinned structures are distributed throughout the Alabama coalbed methane fields, and these structures affect the production of gas and water from coal-bearing strata. Extensional structures in Deerlick Creek and Cedar Cove fields include normal faults and hanging-wall rollovers, and area balancing indicates that these structures are detached in the Pottsville Formation. Compressional folds in Gurnee and Oak Grove fields, by comparison, are interpreted to be detachment folds formed above decollements at different stratigraphic levels. Patterns of gas and water production reflect the structural style of each field and further indicate that folding and faulting have affected the distribution of permeability and the overall success of coalbed methane operations. Area balancing can be an effective way to characterize coalbed methane reservoirs in structurally complex regions because it constrains structural geometry and can be used to determine the distribution of layer-parallel strain. Comparison of calculated requisite strain and borehole expansion data from calliper logs suggests that strain in coalbed methane reservoirs is predictable and can be expressed as fracturing and small-scale faulting. However, refined methodology is needed to analyze heterogeneous strain distributions in discrete bed segments. Understanding temporal variation of production patterns in areas where gas and water production are influenced by map-scale structure will further facilitate effective management of coalbed methane fields.

Characterization of non-methane hydrocarbons in the rural southeast United States

Measurements of non-methane hydrocarbons, as well as ozone, meteorological and trace gas data, made at four rural sites located within the southeastern United States as a part of the Southern Oxidants Study are compared. The C 2–C 10 hydrocarbons were obtained during the 1200–1300 local time period, once every six days from September 1992 through October 1993. The light molecular weight alkanes (ethane, propane, n-butane, iso-butane, ethene and acetylene) display a seasonal variation of a winter maximum and summer minimum. Isoprene was virtually non-existent during the winter at all sites, and averaged from 9.8 ppbC (Yorkville, Georgia) to 21.15 ppbC (Centreville, Alabama) during the summer. The C 10 terpene concentration was largest during the summer period with averages ranging between 3.19 ppbC (Centreville, Alabama) and 6.38 ppbC (Oak Grove, Mississippi); winter time concentrations ranged from 1.25 to 1.9 ppbC for all sites. Propylene-equivalent concentrations were calculated to account for differences in reaction rates between the hydroxyl radical and individual hydrocarbons, and to thereby estimate their relative contribution to ozone, especially in regard to the highly reactive biogenic compounds such as isoprene. The propy-equivalent concentrations from the biogenics represent at least 65% of the total non-methane hydrocarbon sum at these four sites during the summer season. A plot of ozone versus NO γ-NO highlights the NO x limited relationship of this region.

Steam gasification of coals with calcium hydroxide

Thin-skinned structures are distributed throughout the Alabama coalbed methane fields, and these structures affect the production of gas and water from coal-bearing strata. Extensional structures in Deerlick Creek and Cedar Cove fields include normal faults and hanging-wall rollovers, and area balancing indicates that these structures are detached in the Pottsville Formation. Compressional folds in Gurnee and Oak Grove fields, by comparison, are interpreted to be detachment folds formed above decollements at different stratigraphic levels. Patterns of gas and water production reflect the structural style of each field and further indicate that folding and faulting have affected the distribution of permeability and the overall success of coalbed methane operations. Area balancing can be an effective way to characterize coalbed methane reservoirs in structurally complex regions because it constrains structural geometry and can be used to determine the distribution of layer-parallel strain. Comparison of calculated requisite strain and borehole expansion data from calliper logs suggests that strain in coalbed methane reservoirs is predictable and can be expressed as fracturing and small-scale faulting. However, refined methodology is needed to analyze heterogeneous strain distributions in discrete bed segments. Understanding temporal variation of production patterns in areas where gas and water production are influenced by map-scale structure will further facilitate effective management of coalbed methane fields.

Diversité biologique et phytogéographique des chênaies vertes d'Algérie

After abrief overview on the floristic richness of the algerians holm oak groves, the author consider respectively the analysis of the biological and phytogeographical diversity. This study is led of manner to stress by the crude and real specter utilization, modifications of the flora along a dynamic gradient : forest-preforest-scrub-grassland. The former translate into a progressive thérophytisation in relationship the péjoration of the general climate but equally with the luminous climate induced by the degree of training opening vegetable. To the phytogéographie plan, despite the maintenance of a certain rate of endémisme, the tendency is to the standardization and to the trivialization of the flora linked to the extension of pluriregionals elements.

Temporary changes of the edaphic characteristics during the first year of postfire regeneration in two oak groves

Changes in chemical composition of surface 5 cm soil were examined during I year following a fire in two Quercus pyrenaica ecosystems. The soils were analyzed for available Ca, Mg, P, K, total N, organic C, and pH. The principal component analysis, including the magnitudes and rates of increases or decreases of the chemical components, showed that the postfire soils of the two ecosystems had a markedly different behavior. The reasons for the differences were ascribed primarily to the intensity of the fire, caused by different understory vegetation and climatic situations.

Coal-body geometry and synsedimentary detachment folding in Oak Grove coalbed methane field, Black Warrior Basin, Alabama : J. C. Pashin, American Association of Petroleum Geologists Bulletin 78(6), 1994, pp 960–1980

Coal-body geometry and synsedimentary detachment folding in Oak Grove coalbed methane field, Black Warrior Basin, Alabama : J. C. Pashin, American Association of Petroleum Geologists Bulletin 78(6), 1994, pp 960–1980

Distribution of Holocene benthic foraminifera from the tropical Southwest Pacific Ocean

Distribution of Holocene benthic foraminifera from the tropical Southwest Pacific Ocean