Results 21 to 30 of about 204,903 (348)
Accretionary Tectonics of the North American Cordillera [PDF]
, 1983 Continental geology stands on the threshold of a change that is likely to be as fundamental as plate-tectonic theory was for marine geology. Ongoing seismic-reflection investigations into the deep crustal structure of North America are verifying that ...
Saleeby, Jason B.
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The Effect of Obliquity of Slip in Normal Faults on Distribution of Open Fractures
Frontiers in Earth Science, 2019 Close to surface, cohesive rocks fail in extension, which results in open fractures that can be several tens of meters wide, so-called massively dilatant faults. These open fractures make fault slip analysis in rifts challenging, as kinematic markers are
Christoph von Hagke +5 more
doaj +1 more source
Multiphase boudinage: a case study of amphibolites in marble in the Naxos migmatite core [PDF]
Solid Earth, 2018 In multiply deformed terrains multiphase boudinage is common, but identification and analysis of these is difficult. Here we present an analysis of multiphase boudinage and fold structures in deformed amphibolite layers in marble from the migmatitic ...
S. Virgo, C. von Hagke, J. L. Urai
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Exhumation history of the Higher Himalayan Crystalline along Dhauliganga-Goriganga river valleys, NW India: new constraints from fission track analysis [PDF]
, 2009 New apatite and zircon fission track data collected from two transects along the Dhauliganga and Goriganga rivers in the NW Himalaya document exhumation of the Higher Himalayan Crystalline units. Despite sharing the same structural configuration and rock
A. Carter +66 more
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地质科技通报, 2023 Objective The study focuses on the development of critical elements in coal as a new area of mineral resource exploration. Methods Various analytical methods including X-ray diffraction, X-ray fluorescence spectrum, and inductively coupled plasma-mass ...
Duoen Yuan +4 more
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Emplacement of sandstone intrusions during contractional tectonics [PDF]
, 2016 Acknowledgments We acknowledge the support of sponsoring companies of Phase 3 of the Sand Injection Research Group (SIRG). We are very grateful to John Waldron and Jessica Ross for the constructive reviews of the manuscript.
Alsop, G. Ian +4 more
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International Journal of Speleology, 2016 Tube-fed structure occurs as a general phenomenon in Tengchong basic lavas, such as lava tubes, lava plugs and tube-related collapse depressions. We deduced the development of Laoguipo lava flows, which is the longest lava tube (Jingfudong lava tube ...
Zhengquan Chen +4 more
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Remote Sensing, 2022 The rock mass along the Jinsha River is relatively broken under complex geological action. Many ancient landslides were distributed along the Jinsha River in Gongjue County, which is very dangerous under the action of gravity, tectonic stress and river ...
Jiaming Yao, Xin Yao, Xinghong Liu
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Plate tectonics: When ancient continents collide [PDF]
, 2017 The geological record preserves scant evidence for early plate tectonics. Analysis of eclogites — metamorphic rocks formed in subduction zones — in the Trans-Hudson mountain belt suggests modern-style subduction may have operated 1,800 million years ...
Clare Warren +4 more
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Observing eruptions of gas-rich compressible magmas from space
Nature Communications, 2016 Satellite observations are an important tool in volcano monitoring, but observations such as ground deformation and gas emissions are treated independently. Here, the authors present a model coupling them through their link to magma volatile contents and
Brendan McCormick Kilbride +2 more
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