Results 71 to 80 of about 98,413 (148)

Formation and Alteration of Magnesite Nodules From Kunwarara, Queensland, Australia, as an Analog to Mg‐Carbonate Formation on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Magnesite (MgCO3) is a magnesium (Mg) carbonate mineral that records the aqueous environmental conditions of its formation. On Earth, magnesite forms in metamorphic, diagenetic or pedogenic environments, and distinguishing between these environments is critical for understanding the fluid chemistry during magnesite precipitation. Mg carbonates
E. L. Cardarelli, T. M. Present, P. M. Vasconcelos, L. C. Kah, C. Swindle, S. Bhattacharjee, K. Farley   +6 more
wiley   +1 more source

OS-01 SCEEP: Report on economics of environmental protection for a federal oil shale leasing program

, 1971
Prepared for the Director of Natural Resources of the State of Colorado.Authors' names are from citation listed on the Colorado Geological Survey's website.This report was prepared at the request of Thomas W.
Tweedy, John B., Prien, Charles H., Cameron, Russell J., Sargent, Ralph, Cooley, Frank G.   +4 more
core  

Hydrocarbon Potential and Reservoir Characteristics of Lacustrine Shale: A Case of Lower Jurassic in the Western Qaidam Basin, NW China

, 2023
The Lower Jurassic lacustrine shale is well developed in the western Qaidam Basin and characterized by significant thickness and continuous distribution. Previous investigations have indicated its substantial potential as a shale gas resource.
Yupeng Cao, Bingqiang Liu, Min Wang, Zhiming Yan   +3 more
core   +1 more source

Dolomitic Microfossil Preservation in a Cryogenian Microbial Reef, Arkaroola (South Australia)

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT Microbial dolostones that now form the Arkaroola reef, northern Adelaide Rift Complex, and were deposited during the Cryogenian interglacial period, display a wide range of meso‐scale stromatolite morphotypes in outcrop. Microcharacterisation involving optical microscopy, combined scanning electron microscopy and energy dispersive spectroscopy
France Champenois, Maree L. Corkeron, Annette D. George   +2 more
wiley   +1 more source

Red to Green: A Lipid Biomarker Record of Tonian‐Ediacaran Algae in Siberia

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT Multiple lines of evidence point to a major diversification of Eukarya in the late Tonian period, ca. 800–720 Ma ago. Regular steranes, lipid biomarkers primarily sourced from eukaryotes, are first unambiguously reported from multiple sites. Here, we present lipid biomarker stratigraphic records from two drill‐cores from the Lena‐Anabar Basin ...
Adriana I. Rizzo, Andrey Bekker, Anton B. Kuznetsov, Victoria B. Ershova, Yijun Xiong, Karl E. Karlstrom, Simon W. Poulton, Gordon D. Love   +7 more
wiley   +1 more source

Movability of lacustrine shale oil: A case study of Dongying Sag, Jiyang Depression, Bohai Bay Basin

, 2014
Taking the Paleogene Shahejie Formation lacustrine shale in Dongying Sag, Jiyang Depression, Bohai Bay Basin, as an example, this paper makes a systematic study on the properties of shale of lower part of Sha-3 Member (Es3x) and upper part of Sha-4 ...
Jingong ZHANG, Youshu BAO, Zheng LI, Linye ZHANG, Juyuan LI, Rifang ZHU   +5 more
core   +1 more source

Geophysical update of the diameter of the Zhamanshin impact structure, Kazakhstan

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2284-2302, September 2026.
Abstract The rim of the 0.9‐Ma‐old Zhamanshin impact crater in Kazakhstan is considered to be almost completely exposed via a series of hills surrounding a central flat area, indicating an apparent diameter of 14 km. This would make Zhamanshin the second largest impact crater of the Quaternary period. However, the overall geometry of these hills is not
Yoann Quesnel, Dilyara M. Kuzina, Jérôme Gattacceca, Minoru Uehara, Ayrat G. Kharisov, Dmitry D. Badyukov, Pierre Rochette   +6 more
wiley   +1 more source

The influence of heterogeneity of lacustrine shale facies on rock mechanical properties and brittleness: a case study of Jurassic lacustrine shale reservoirs in Northeast Sichuan Basin

IntroductionDue to the significant increase in plasticity under conditions of high temperature and pressure, the existing single brittleness evaluation methods prove inadequate for accurately characterizing the compressibility of deep shale in ...
Weilin Yan, Haibo Zhao, Jianliang Zhang, Guangwu Bi, Zimeng Xing, Xuefeng Yang, Shujun Yin   +6 more
core   +1 more source

The Methane Adsorption Ability of Lacustrine Shale and Its Controlling Factors: A Case Study of Shale from the Jurassic Lianggaoshan Formation in the Sichuan Basin

For lacustrine shale oil and gas reservoirs with coexisting hydrocarbon fluid properties, evaluating the adsorption capacity of shale is of significant importance for the exploration of lacustrine shale oil and gas.
Sile Wei, Fan Zeng, Dazhi Zhang, Mingyi Hu, Gang Yang, Pei Fu   +5 more
core   +1 more source

Pyrolysis Kinetics of Lacustrine Shales from the Yanchang Formation: Revealing the Role of Kerogen Type in Shaping Hydrocarbon Generation and Expulsion Pattern

Geosciences
The Yanchang Formation in the Ordos Basin is a key target for continental shale oil exploration in China. Due to its complex geological background and diversified organic inputs, the hydrocarbon generation and accumulation in the lacustrine basin remain ...
Lingling Liao, Yifei Zhang, Yan Li, Yinhua Pan   +3 more
doaj   +1 more source