Results 41 to 50 of about 75,256 (359)

Theoretical petrology [PDF]

, 1979
The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core   +1 more source

Classification of Igneous Rocks [PDF]

Scientific American, 1913
n ...
openaire   +2 more sources

Two-End-Member Mixing in the Fluids Emitted From Mud Volcano Lei-Gong-Huo, Eastern Taiwan: Evidence From Sr Isotopes

Frontiers in Earth Science, 2022
Mud volcano is one of the most important conduits for deep seated materials to migrate upward in sedimentary basins, convergent margins, and subduction zones.
Hung-Chun Chao, Hung-Chun Chao, Chen-Feng You, Chen-Feng You, In-Tian Lin, Hou-Chun Liu, Ling-Ho Chung, Chun-Chang Huang, Chuan-Hsiung Chung, Chuan-Hsiung Chung   +9 more
doaj   +1 more source

Earth's middle age [PDF]

, 2014
This research was funded through Natural Environment Research Council (grant NE/J021822/1) and the APC was paid through the RCUK OA block grant.Earth's middle age, extending from 1.7 to 0.75 Ga, was characterized by environmental, evolutionary, and ...
Cawood, Peter Anthony, Hawkesworth, Chris   +1 more
core   +1 more source

Effects of igneous rock erosion on spontaneous combustion properties and structure of coal

Meikuang Anquan
In order to explore the influence law of igneous rock erosion on coal spontaneous combustion characteristics and structure, taking primary coal and igneous rock eroded coal in the same coal face of Shanxi Mine and Liaoning Mine as the samples, the ...
Haifeng HU, Yingbing YANG, Yunzeng ZHANG, Minghao CHEN, Jiace GUO   +4 more
doaj   +1 more source

The Archaean to Proterozoic igneous rocks of the Pilbara region, Western Australia –internationally significant geology of a globally unique potential geopark

International Journal of Geoheritage and Parks, 2019
The Pilbara region of Western Australia, covering some 500 km × 500 km, provides a diversity of Archaean to Proterozoic igneous rocks in a relatively compact area that records a younging southward crustal history of igneous activity, sedimentation, early
V. Semeniuk, M. Brocx
doaj   +1 more source

Does Zircon Shape Retain Petrogenetic Information?

Geochemistry, Geophysics, Geosystems, 2023
Zircon shape is commonly reported during geochronology and geochemistry analyses of igneous, metamorphic, and sedimentary rocks, but the relationship of zircon shape to primary growth environmental conditions remains poorly constrained.
T. Scharf, C. L. Kirkland, M. Barham, C. Yakymchuk, V. Puzyrev   +4 more
doaj   +1 more source

Computing Elastic Moduli of Igneous Rocks Using Modal Composition and Effective Medium Theory

Geosciences, 2022
Elastic constants of rock materials are the basic parameters required for modeling the response of rock materials under mechanical loads. Experimental tests for determining these properties are expensive, time-consuming and suffer from a high uncertainty
Saeed Aligholi, Manoj Khandelwal
doaj   +1 more source

Report of Investigations No. 135 Oligocene Volcanism and Multiple Caldera Formation in the Chinati Mountains, Presidio County, Texas [PDF]

, 1983
UT ...
Cepeda, Joseph C., Henry, Christopher D.
core   +1 more source

Extreme fire severity interacts with seed traits to moderate post‐fire species assemblages

American Journal of Botany, EarlyView.
Abstract Premise Climate change is globally pushing fire regimes to new extremes, with unprecedented large‐scale severe fires. Persistent soil seed banks are a key mechanism for plant species recovery after fires, but extreme fire severity may generate soil temperatures beyond thresholds seeds are adapted to.
Michi Sano, Ryan Tangney, Alexandria Thomsen, Mark K. J. Ooi   +3 more
wiley   +1 more source