Results 91 to 100 of about 41,082 (236)

Geology of the Gobi and Mongol Altai junction enhanced by gravity analysis: a key for understanding of the Mongolian Altaides

Journal of Maps, 2020
The geological map L-47-V at a scale 1:500,000 covers part of Mongolian Altaids with ophiolite fragments in southern Central Asian Orogenic Belt in SW Mongolia. This region has a basin and range topography with Neoproterozoic and Palaeozoic units exposed
Pavel Hanžl, Alexandra Guy, Altanbaatar Battushig, Ondrej Lexa, Karel Schulmann, Eva Kunceová, Kristýna Hrdličková, Vojtěch Janoušek, David Buriánek, Zuzana Krejčí, Yingde Jiang, Dorjsuren Otgonbaatar   +11 more
doaj   +1 more source

The Origin of Life [PDF]

, 1974
The origin of life is in a sense a genetic problem, for, as H. J. Muller pointed out many years ago, the essential attribute that identifies living matter is its capacity to replicate itself and its variants (1). Because this uniquely biological property
Horowitz, N. H., Hubbard, Jerry S.
core   +1 more source

Evaluation of existing knowledge of the tectonic history and lithospheric structure of South America [PDF]

While data is available on the lithospheric and crustal structure of the Andes region of South America, there is limited knowledge of these aspects of the eastern portion of the continent.
Keller, G. R., Lidiak, E. G.
core   +1 more source

Combustion and Pyrolysis EA‐IRMS Techniques to Determine the δ2H of Diamonds

Rapid Communications in Mass Spectrometry, Volume 40, Issue 10, 30 May 2026.
ABSTRACT Rationale Diamonds are generally considered to be metasomatic minerals originating from the Earth's mantle. They formed through the interaction of carbon‐bearing fluids or melts with the surrounding deep lithology. Most knowledge about the formation of diamonds comes from studying their mineral inclusions or stable isotopes.
François Fourel, Christophe Lécuyer, Emilie Thomassot, Etienne Deloule, Charles Ojeimi   +4 more
wiley   +1 more source

Hypolimnetic anoxia in oligotrophic lakes and its effects on nutrient supply and phytoplankton communities

Ecosphere, Volume 17, Issue 4, April 2026.
Abstract Low concentrations of dissolved oxygen (DO) in hypolimnetic waters are becoming more common and could affect nutrient supplies available to phytoplankton communities in meso‐ and eutrophic lakes. We examined the connections among hypolimnetic DO, nutrient concentrations, and phytoplankton communities in 26 oligotrophic lakes in the Kawartha ...
Katlin D. Edwards, Catriona L. C. Jones, Nolan J. T. Pearce, Marguerite A. Xenopoulos, Paul C. Frost   +4 more
wiley   +1 more source

Holocene Normal Faulting in the Southern Rocky Mountain Trench; Orogenic Collapse Modulated by Glacial Unloading?

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Southern Rocky Mountain Trench (SRMT) is a conspicuous valley in the eastern Canadian Cordillera. It lies above a sharp change in lithospheric strength and thickness and is occupied by a normal fault thought to have last been active in the Eocene.
T. Finley, E. Nissen, L. J. Leonard, J. F. Cassidy, V. Prush, B. Miller   +5 more
wiley   +1 more source

Evolution of the East Antarctic Ice Sheet Since Glacial Inception From Seismic Stratigraphic Records in Vincennes Bay

Paleoceanography and Paleoclimatology, Volume 41, Issue 4, April 2026.
Abstract Seismic reflection data from Vincennes Bay, East Antarctica, provide the first insights into the Cenozoic evolution of the East Antarctic Ice Sheet (EAIS) in the Knox Coast. Long‐distance seismic horizon correlation allows age estimates for the seismic stratigraphic framework constructed for the continental shelf.
Timo Mühlberger‐Krause, Karsten Gohl, Katharina Hochmuth, German Leitchenkov, Chiara A. Tobisch, Rachel Barrett, Johann P. Klages, Sebastian Krastel   +7 more
wiley   +1 more source

Pyrolytic data verification in potential assessment and catagenetic transformation of the Proterozoic low-carbon formations of eastern Siberia

Georesursy
The ancient Precambrian formations of Eastern Siberia include oil and gas source rock (SR) interlayers, but in most cases, they can’t be classified as high-carbon ones, because the actual organic carbon content in these strata is low and rarely exceeds ...
E. D. Sivkova, A. V. Stoupakova, A. G. Kalmykov, R. S. Sautkin, M. A. Bolshakova   +4 more
doaj   +1 more source

Zircon ages delimit the provenance of a sand extrudite from the Botucatu Formation in the Paraná volcanic province, Iraí, Brazil

Anais da Academia Brasileira de Ciências, 2015
Ion microprobe age determinations of 102 detrital zircon crystals from a sand extrudite, Cretaceous Paraná volcanic province, set limits on the origin of the numerous sand layers present in this major flood basalt province.
VITER M. PINTO, LÉO A. HARTMANN, JOÃO O.S. SANTOS, NEAL J. MCNAUGHTON   +3 more
doaj   +1 more source

Depositional Facies, Sequence Stratigraphy, and Diagenesis of Lower Cretaceous Carbonate Reservoir, Southern Iraq: Implications for Petroleum Exploration

Journal of Petroleum Geology, Volume 49, Issue 2, Page 312-345, April 2026.
ABSTRACT The Lower Cretaceous Yamama Formation of southern Iraq represents a key carbonate reservoir within Iraq and the Middle East, yet its complex depositional facies architecture and diagenetic alterations present challenges for predicting reservoir quality.
A. K. A. Mohammed, F. Velledits, I. Q. Mohammed, M. Alsuwaidi, H. Mansurbeg, F. Kristály, D. K. Ivanova, Eloi González‐Esvertit, A. Awdal   +8 more
wiley   +1 more source