Results 81 to 90 of about 57,916 (330)

Geological structure and industrial development of Iturup Island

Известия высших учебных заведений: Геология и разведка
Background. The history of the Archipelago of Kuril Islands and its geological structure are discussed from the perspective of the development of paleovolcanic structures. The magmaticstructure of Iturup Island is analyzed.
A. K. Naravas, V. V. Dyakonov, N. A. Pogrebs   +2 more
doaj   +1 more source

What can lithics tell us about hominin technology's ‘primordial soup’? An origin of stone knapping via the emulation of Mother Nature

Archaeometry, EarlyView.
Abstract The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat obtained from medium‐to‐large‐sized vertebrates. The invention of knapping may have occurred via an additive (i.e., cumulative)
Metin I. Eren, Stephen J. Lycett, Michelle R. Bebber, Alastair Key, Briggs Buchanan, Emma Finestone, Joseph Benson, Rebecca Biermann Gürbüz, Adela Cebeiro, Roman Garba, Anne Grunow, C. Owen Lovejoy, Danielle MacDonald, Erica Maletic, G. Logan Miller, Joseph D. Ortiz, Jonathan Paige, Justin Pargeter, Tomos Proffitt, Mary Ann Raghanti, Teal Riley, Jeffrey I. Rose, David M. Singer, Robert S. Walker   +23 more
wiley   +1 more source

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Linking Volcanism, Hydrothermal Venting, and Ordovician/Silurian Marine Organic-Rich Sediments in the Eastern Sichuan Basin, Southwest China

Journal of Marine Science and Engineering
The Ordovician/Silurian boundary (Wufeng/Longmaxi formations) in the Shizhu region, eastern Sichuan Basin, China hosts organic-rich black shales which are frequently interbedded with bentonite and hydrothermal minerals (e.g., pyrite).
Shaojie Li, Zhou Zhu, Qilin Xiao, Suyang Cai, Huan Li   +4 more
doaj   +1 more source

Interpreting variability in Hg concentrations and Hg-isotopes across intervals of large-scale volcanism: A case study from the end-Triassic [PDF]

, 2022
Xia Hua, David J. Kemp, Runsheng Yin, Jun Shen, Xin Jin, Song Yi, Chunju Huang   +6 more
openalex   +1 more source

Thermal Buffering, Heat Advection and Crustal Thinning in the Ryoke Metamorphic Complex, Yanai, Southwest Japan

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The metamorphic zoning and geothermobarometry of the Ryoke metamorphic complex in the Yanai area, southwest Japan, show that its thermobaric structure was buffered by the dehydration melting of biotite. The temperatures over most of the area covered by the three high‐grade zones (8.5‐ to 19.0‐km depth) are consistent with those of the ...
Takeshi Ikeda, Kazuhiro Miyazaki, Yu Sugawara, Risa Hayashi   +3 more
wiley   +1 more source

Modulated electrochemical force microscopy: Investigation of sodium‐ion transport at hard carbon composite anodes

Journal of Microscopy, EarlyView.
Abstract For sodium (Na)‐ion batteries (SIBs), the next generation of sustainable batteries, hard carbon (HC) composite electrodes are the most used anodes. Here, we demonstrate the potential of modulated electrochemical force microscopy (mec‐AFM) to investigate electrochemical strain due to ion insertion at the electrolyte/electrode interface.
Sven Daboss, Nikolas Franke, Beatrice Fraboni, Christine Kranz, Tobias Cramer   +4 more
wiley   +1 more source

Volcanic traces [PDF]

Nature, 1990
Stone, J, Porcelli, D, Vance, D, Galer, S, Onions, R   +4 more
openaire   +1 more source

Stress Controls of Monogenetic Volcanism: A Review

Frontiers in Earth Science, 2016
The factors controlling the preparation of volcanic eruptions in monogenetic fields are still poorly understood. The fact that in monogenetic volcanism each eruption has a different vent suggests that volcanic susceptibility has a high degree of ...
J. Martí, C. López, Stefania Bartolini, L. Becerril, A. Geyer   +4 more
semanticscholar   +1 more source

Hidden lineages in the African Sky Islands: A taxonomic reevaluation of Afrocarduus (Compositae)

Journal of Systematics and Evolution, EarlyView.
Species delimitation is crucial for biodiversity studies. Using Hyb‐Seq and phylogenomics, we reassessed Afrocarduus, endemic to Afromontane and Afroalpine regions, uncovering 16 evolutionary lineages (2.3 Mya). Morphological data support their distinctiveness, with acaulescence evolving independently twice. The traditionally broad A.
Lucía D. Moreyra, Juan Antonio Calleja, Cristina Roquet, Siri Birkeland, Carme Blanco‐Gavaldà, Mercè Galbany‐Casals, Abel Gizaw, Frederik Leliaert, Christian Brochmann, Alfonso Susanna   +9 more
wiley   +1 more source