Results 81 to 90 of about 131,970 (167)

Geochemical Characteristics and Origin of Natural Gas in the Middle of Shuntuoguole Low Uplift, Tarim Basin: Evidence from Natural Gas Composition and Isotopes

open access: yesEnergies
Multiple types of reservoirs, including volatile oil reservoirs, condensate gas reservoirs, and dry gas reservoirs, have been discovered in ultra-deep layers buried at depths greater than 7500 m.
Hui Long   +3 more
doaj   +1 more source

Microbial Effects on Repository Performance [PDF]

open access: yes, 2010
This report presents a critical review of the international literature on microbial effects in and around a deep geological repository for higher activity wastes.
Humphreys, Paul   +2 more
core  

Chemical Heterogeneities along the South Atlantic Mid-Ocean-Ridge (5-11°S): Shallow or Deep Recycling of Ocean Crust? [PDF]

open access: yes, 2011
Between 5° and 11°S, the Mid-Atlantic Ridge displays anomalous crustal thickness and geochemical compositions, thought to be related to either small scale upper mantle heterogeneities or a weak, diffuse mantle plume.
Garbe-Schönberg, Dieter   +5 more
core  

Geochemical characteristics of the dilbi oilshales

open access: yesBulletin of the Chemical Society of Ethiopia, 1995
Bull. Chem. Soc. Ethiop. 1995, 9(2), 79-91.
Tesfaye Lemma, Miniye Betru
doaj  

An investigation into the controls of granite plutonism in the Sierra da Freita region, Northern Portugal [PDF]

open access: yes, 2012
The Serra da Freita region of north central Portugal was chosen for study as it displays the complex relationships between regional structure, plutonism, regional and contact metamorphism typical of this part of Iberia.
Reavy, Reginald John
core  

Stratabound arsenic and vein antimony mineralisation in Silurian greywackes at Glendinning, south Scotland [PDF]

open access: yes, 1983
Stratiform and disseminated pyrite-arsenopyrite concentrations are overprinted by fracturecontrolled polymetallic mineralisation including stibnite through at least tens of metres of Silurian sediments at Glendinning, near Langholm.
Gallagher, M.J.   +10 more
core  

Initial results for the composition of the igneous basement of the Bowers and Shirshov Ridges (Bering Sea, NW Pacific) [PDF]

open access: yes, 2010
The Bowers and Shirshov Ridges (hereafter BR and SR, respectively) are two prominent submarine structures of unknown age and provenance in the Bering Sea.
Hauff, Folkmar   +4 more
core  

Formation Mechanism and Gemological Characteristics of “Yellow-Skinned” Nanhong Agate in Northeastern Yunnan, China: Evidence from Mineralogy and Geochemistry

open access: yesCrystals
The “yellow-skinned” Nanhong agate represents a unique variety of Nanhong agate found in northeastern Yunnan, China, and it is highly valued for its distinctive yellow exterior and clear red–yellow interface. Owing to the limited research on this variety,
Qiuyun Song   +7 more
doaj   +1 more source

Geochemical characteristics and development models of salinized lacustrine mixed-source rock: a case study of upper member of Lower Ganchaigou Formation in Yingxiongling structural belt, western Qaidam Depression

open access: yesShiyou shiyan dizhi
This study aims to systematically evaluate the hydrocarbon generation potential of the saline lacustrine mixed-source rocks in the upper member of the Lower Ganchaigou Formation in the Yingxiongling structural belt of the Western Qaidam Depression in the
Fei ZHOU   +9 more
doaj   +1 more source

Chronology and Geochemistry on Mesozoic Diorite from the Xi′anli Iron Ore Area in Pingshun, Shanxi Province

open access: yesYankuang ceshi, 2013
The Shanxi Pingshun region is located in the west limb of a large-scale anticline of Taighang Mountain and is to the southeast of the Taihang upwell of Lüliang-Taihang fault block.
WANG Yong   +6 more
doaj  

Home - About - Disclaimer - Privacy