Results 61 to 70 of about 123,575 (347)
Deep Underground Science and Engineering, EarlyView.This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang +5 more
wiley +1 more source
Geology and geochemistry of the Redrock Granite and anorthosite xenoliths (Proterozoic) in the northern Burro Mountains, Grant County, New Mexico, USA [PDF]
Bulletin of the Geological Society of Finland, 2002 Mineral ages from the A-type granites and anorthosite xenoliths in the Redrock area in the northwestern Burro Mountains in southwestern New Mexico cluster around ~1220–1225 Ma and provide yet another example of bimodal igneous activity during this time ...
V.T. McLemore +5 more
doaj +1 more source
, 1984 Yuendumu is a settlement of 1,000 Warlpiri Aborigines, 300 desert kilometres northwest of Alice Springs. VCRs have arrived in this community. Who owns them? Who watches them? What is watched?
Leonard Japanangra Granites +1 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao +5 more
wiley +1 more source
Mafic-silicic magma interaction in the layered 1.87 Ga Soukkio Complex in Mäntsälä, southern Finland [PDF]
Bulletin of the Geological Society of Finland, 2002 The Svecofennian layered Soukkio Complex (1.87 Ga) in Mäntsälä, southern Finland, consists of layered tholeiitic gabbro and porphyritic calc-alkaline monzonite, quartz monzonite and granite, mingled together.
T.T. Eerola
doaj +1 more source
The felsic granites of far north Queensland
, 1991 North Queensland has been the site of widespread and voluminous recurrent felsic magmatism, with granite emplacement occurring in the Middle Proterozoic, in the Silurian and Devonian, and in the Carboniferous and Permian.
Champion, David Christopher
core +1 more source
Deep Underground Science and Engineering, EarlyView.Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan +4 more
wiley +1 more source
Petrogenesis and Tectonic Implication of Jurassic Granites in Central Guangdong, SE China: Constraints from Zircon U-Pb-Hf-O and Whole-Rock Geochemical and Sr-Nd Isotopic Data [PDF]
LithosphereThe origin and tectonic regime responsible for the inland Jurassic granites in Southeast (SE) China remain controversial. This study presents zircon secondary ion mass spectrometry (SIMS) U-Pb ages, in situ zircon Hf-O isotopes, and whole-rock ...
Zhiguang Lai +3 more
doaj +1 more source
Frontiers in Earth Science, 2020 The Guéra Massif, in South-Central Chad hosts granitic rocks that were emplaced during distinct intervals (595–590; ∼570; ∼560 Ma) of the Late Ediacaran Central African Orogenic Belt.
Chi Thi Pham +3 more
doaj +1 more source
The Orivesi granite batholith, Southern Central Finland - characteristics and emplacement [PDF]
Bulletin of the Geological Society of Finland, 1996 The Orivesi granite batholith is situated in an E-W trending belt of granite intrusions along the southern margin of the Central Finland Granitoid Complex (CFGC).
O. Selonen, C. Ehlers
doaj +1 more source