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Articles 1 - 30 of 29804
Full-Text Articles in Geology
Mgrre_Thinsections_Mgrre_11_26, Mgrre
Mgrre_Thinsections_Mgrre_11_25, Mgrre
Mgrre_Thinsections_Mgrre_11_24, Mgrre
Mgrre_Thinsections_Mgrre_11_23, Mgrre
Mgrre_Thinsections_Mgrre_11_22, Mgrre
Mgrre_Thinsections_Mgrre_11_21, Mgrre
Mgrre_Thinsections_Mgrre_11_20, Mgrre
Mgrre_Thinsections_Mgrre_11_19, Mgrre
Mgrre_Thinsections_Mgrre_11_18, Mgrre
Mgrre_Thinsections_Mgrre_11_17, Mgrre
Mgrre_Thinsections_Mgrre_11_16, Mgrre
Mgrre_Thinsections_Mgrre_11_15, Mgrre
System-Scale Patterns Of Karst Ventilation In A Mediterranean Karst Massif And Their Implications For The Subsurface Thermal Regime, José Luis Yanes, Francisco Moral
System-Scale Patterns Of Karst Ventilation In A Mediterranean Karst Massif And Their Implications For The Subsurface Thermal Regime, José Luis Yanes, Francisco Moral
International Journal of Speleology
Karst systems are heterogeneous environments in which water flow is commonly assumed to control subsurface thermal dynamics. However, the role of air circulation at the system scale remains poorly constrained. This study presents a characterization of the thermal expression of ventilation processes in a western Betic Range (southern Spain) karst massif, based on the continuous monitoring of air temperature in multiple conduits distributed along an altitudinal gradient, combined with the analysis of external atmospheric conditions. Results show that ventilation is strongly seasonal and controlled by the interaction between thermal gradients, transient atmospheric variations and system geometry. The observations reveal recurrent …
Mgrre_Thinsections_Mgrre_11_14, Mgrre
Mgrre_Thinsections_Mgrre_11_13, Mgrre
Calcite Spar Of Kryštálová Cave (Slovakia): Insights Into Formation Conditions From Fluid Inclusions, Stable Isotopes, And Noble Gases, Petronela Ševčíková, Yuri Dublyansky, Stanislava Milovská, László Palcsu, Marjan Temovski, Kata Molnár, Gabriella I. Kiss, Mário Olšavský, Pavel Herich, Gabriella Koltai, Christoph Spötl
Calcite Spar Of Kryštálová Cave (Slovakia): Insights Into Formation Conditions From Fluid Inclusions, Stable Isotopes, And Noble Gases, Petronela Ševčíková, Yuri Dublyansky, Stanislava Milovská, László Palcsu, Marjan Temovski, Kata Molnár, Gabriella I. Kiss, Mário Olšavský, Pavel Herich, Gabriella Koltai, Christoph Spötl
International Journal of Speleology
Phreatic calcite spar is an infrequently used yet promising archive for paleohydrology, a diagnostic tool for speleogenesis, and a robust geothermometer. In this study, we investigated phreatic calcite from Kryštálová cave (Malá Fatra Mts., Slovakia) to constrain its formation conditions, reconstruct the composition of its parent fluid, determine precipitation temperatures, and assess its potential for paleohydrology. Fluid-inclusion microthermometry and stable isotope analyses of inclusion water indicate that calcite precipitated at 45-80°C from a meteoric fluid (δ2Hmeas = -87.4 to -84.4‰; δ18Ocalc = -12.2 to -11.8‰) with a purely crustal noble gas signature. Stable …
Mgrre_Thinsections_Mgrre_11_12, Mgrre
Mgrre_Thinsections_Mgrre_11_11, Mgrre
Mgrre_Thinsections_Mgrre_11_10, Mgrre
Mgrre_Thinsections_Mgrre_11_9, Mgrre
Mgrre_Thinsections_Mgrre_11_8, Mgrre
Mgrre_Thinsections_Mgrre_11_7, Mgrre
Mgrre_Thinsections_Mgrre_11_6, Mgrre
Mgrre_Thinsections_Mgrre_11_5, Mgrre
Mgrre_Thinsections_Mgrre_11_4, Mgrre
Mgrre_Thinsections_Mgrre_11_3, Mgrre
Mgrre_Thinsections_Mgrre_11_2, Mgrre
Mgrre_Thinsections_Mgrre_11_1, Mgrre
A Sneak Peek Into Prehistory: Curating An Interactive Fossil Display To Spark Interest In The Ua Little Rock Natural History Museum, Syd Joheim, Rene Shroat-Lewis
A Sneak Peek Into Prehistory: Curating An Interactive Fossil Display To Spark Interest In The Ua Little Rock Natural History Museum, Syd Joheim, Rene Shroat-Lewis
Research and Creative Works Expo
Arkansas does not currently have a dedicated natural history museum, creating a unique opportunity for UA Little Rock following the recent donation of an expansive fossil collection. In response, the university established a natural history museum initiative intended to benefit both the campus community and the broader public across Arkansas. This initiative provides accessible resources for learning about natural science, evolution, and the state’s prehistoric past, areas that are often underrepresented in informal science education. It also serves as a platform for outreach, student engagement, and undergraduate research, strengthening UA Little Rock’s role in science education, workforce development, and community …
Extensive Glacier Loss In The Coterminous United States, Andrew G. Fountain, Bryce Glenn, Christopher Mcneil, Brian Menounos
Extensive Glacier Loss In The Coterminous United States, Andrew G. Fountain, Bryce Glenn, Christopher Mcneil, Brian Menounos
Geology Faculty Publications and Presentations
Glaciers populate the mountain ranges of the western conterminous United States and despite their importance to alpine hydrology, their area and volume change have never been comprehensively evaluated. Our study shows that since the mid-twentieth century about one-quarter of the glaciers have disappeared and the overall area and volume are reduced by one-third. The pattern of glacier shrinkage suggests most glaciers in the conterminous United States are largely maintained by local topographic influences due to their small size. These results improve our understanding of evolving high alpine hydrology and importance to ecosystem processes.