Results 71 to 80 of about 5,958 (223)

An Aeolian Depositional Sequence Shaped by Near‐Surface Water at the Base of the Layered Sulfate Unit, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract The basal strata of the orbitally defined Layered Sulfate unit (LSu) in Gale crater, Mars, marks the end of a major mineralogical transition from clay‐to sulfate‐bearing stratigraphy. This has previously been attributed to a period of significant aridification of Gale's climate. Here, we present ground‐based observations by the Curiosity rover
Amelie L. Roberts, Sanjeev Gupta, Aster Cowart, Lauren A. Edgar, William Rapin, William E. Dietrich, Edwin Kite, Steven G. Banham, Joel M. Davis, Claire A. Mondro, Dave M. Rubin, John P. Grotzinger, William Farrand, Linda Kah, Kevin Lewis, Alexander Bryk, Catherine Weitz, Rachel Y. Sheppard, Gwénaël Caravaca, Stéphane Le Mouélic, Emma R. Harris, Patrick J. Gasda, Aileen Yingst, Deirdra Fey, Jeffrey R. Johnson, Gerhard P. Paar, Abigail A. Fraeman, Ashwin R. Vasavada   +27 more
wiley   +1 more source

Provenance and Petrological Evolution of Sand Injection Complexes: Insights From Heavy Mineral Analysis in the Paleogene Forearc Succession of the San Joaquin Basin

Basin Research, Volume 38, Issue 3, May–June 2026.
The study of heavy mineral assemblages with statistical analysis resolves provenance signatures and quantifies syn‐emplacement modification of sand injection complexes. Results demonstrate transformative petrological processes, including density‐dependent hydraulic sorting and mechanical grain degradation.
Gustavo Zvirtes, Andrew Morton, Andrew Hurst, Ruy Paulo Philipp, Wiktor Luzinski, Giuseppe Palladino, Luciano Alessandretti   +6 more
wiley   +1 more source

Correction: First Clarkforkian Equivalent Land Mammal Age in the Latest Paleocene Basal Sparnacian Facies of Europe: Fauna, Flora, Paleoenvironment and (Bio)stratigraphy

, 2014
Correction: First Clarkforkian Equivalent Land Mammal Age in the Latest Paleocene Basal Sparnacian Facies of Europe: Fauna, Flora, Paleoenvironment and (Bio ...
PLOS ONE (2189197)
core   +1 more source

Palynofacies analysis for interpreting paleoenvironment and hydrocarbon potential of Triassic–Jurassic strata in the Sichuan Basin, China

, 2021
The Sichuan Basin is one of the largest petroliferous basins in China. The continental fluvial‒lacustrine sediments of the Upper Triassic Xujiahe Formation and the Lower Jurassic Zhenzhuchong Formation yield diverse fossil organisms and host one of the ...
Li, Li-Qin, Vajda, Vivi,, Li, Li-Qin,, Vajda, Vivi, Wang, Yong-Dong, Wang, Yong-Dong,   +5 more
core   +1 more source

The stone book

Travaux de l'Institut de Speologie Emile Racovitza, 2018
The aesthetic value of a wild and/or tourist cave is well known everywhere. Anyway, presently only few people are aware that caves are the most important natural laboratories, in which it is possible to complete studies and researches that, in some cases,
PAOLO FORTI
doaj  

Eocene sporopollen assemblage from Ramree Island, Myanmar and its palaeoenvironment significance

Shiyou shiyan dizhi
In order to support the oil and gas exploration in China-Burma cooperation block M and determine the age and sedimentary environment of the oil and gas bearing strata in Ramree Island of this block, a total of 10 source rock samples were collected for ...
Defeng SHI, Youhua ZHU
doaj   +1 more source

AN OPEN SCIENCE APPROACH TO GIS-BASED PALEOENVIRONMENT DATA

, 2016
Paleoenvironmental studies and according information (data) are abundantly published and available in the scientific record. However, GIS-based paleoenvironmental information and datasets are comparably rare. Here, we present an Open Science approach for
M. Zickel, Zickel, M., Becker, D., D. Becker, Bareth, Georg, O. Bubenzer, Verheul, J., C. Willmes, J. Verheul, Willmes, C., Bolten, Andreas, G. Bareth, Yener, Y., Y. Yener, A. Bolten, Bubenzer, O.   +15 more
core   +1 more source

Characteristics and Paleoenvironment of High-Quality Shale in the Triassic Yanchang Formation, Southern Margin of the Ordos Basin

, 2023
A set of high-quality lacustrine shales at the bottom of the Chang 7 member of the Yanchang Formation in the Ordos Basin is one of the main source rocks of tight oil and gas and shale oil in the Yanchang Formation.
Congjun Feng, Mengsi Sun, Yipu Li
core   +1 more source

Chemical and elementary characterization of Spongiophyton nanum: Understanding the phylogeny, paleoenvironment, and fossilization processes of an enigmatic flora

, 2023
The record of thalloid macrofossils in the North-Northwest region of the Paraná Basin is less studied compared to that of invertebrate paleofauna in the same area.
Sousa, Felipe Nascimento [UNESP], Ghilardi, Renato Pirani [UNESP], Renato Pirani Ghilardi, Victor Rodrigues Ribeiro, Gaia, Geovane, Ribeiro, Victor Rodrigues [UNESP], Ricardi-Branco, Fresia, Fresia Ricardi-Branco, Felipe Nascimento Sousa, Llopart, Marta Pereira [UNESP], Geovane Gaia, Marta Pereira Llopart   +11 more
core   +1 more source

Orbital cycle records in shallow unconsolidated sediments: implications for global carbon cycle and hydrate system evolution in deep-sea area sediments of the Qiongdongnan Basin

Frontiers in Marine Science
IntroductionMilankovitch theory has extensive application in sequence stratigraphy and the establishment of time scales. However, it is rarely applied to shallow strata rich in hydrates.
Yang Dong, Yang Dong, Ren Wang, Ren Wang, Jinqiang Liang, Yulin He, Jinfeng Ren, Wanzhong Shi, Wanzhong Shi, Xiaosong Wei, Xiaosong Wei, Hao Du, Hao Du, Xiangyang Xie, Arthur B. Busbey   +14 more
doaj   +1 more source