Results 101 to 110 of about 311,791 (350)

Insights into the genesis of thick halite in the Kuqa Depression (Tarim Basin, China): New mineralogical, lithological and geochemical evidence

open access: yesThe Depositional Record, EarlyView.
Halite thickness in Mbr 2 of the Kumugeliemu can reach 1000 m. The thick halite is associated with sedimentary rock with shallow water fabrics. The thick halite was formed in a shallow‐sea water environment. The ‘Multiple transgression‐salt‐forming’ model was established.
Peng Qin, Dakang Zhong, Zhonggui Hu
wiley   +1 more source

X-ray Amorphous Components of Antarctica Dry Valley Soils: Weathering Implications for Mars [PDF]

open access: yes
The Antarctic Dry Valleys (ADV) comprise the largest ice-free region of Antarctica. Precipitation usually occurs as snow, relative humidity is frequently low, and mean annual temperatures are about -20C [1]. Substantial work has focused on soil formation
Graff, T., Ming, D. W., Quinn, J. E.
core   +1 more source

Clay mineralogy and shale instability: an alternative conceptual analysis

open access: yesClay minerals, 2014
The instability of shales in drilled formations leads to serious operational problems with major economic consequences for petroleum exploration and production.
M. J. Wilson, L. Wilson
semanticscholar   +1 more source

Untangling sedimentation processes in a deep fjord lake in Labrador: A high‐resolution archive of past environment dynamics at Grand Lake

open access: yesThe Depositional Record, EarlyView.
Sedimentological and geochemical characteristics are used to reconstruct sedimentation dynamics and erosional processes. Several rapidly deposited layers are characterised over changing depositional environments during the Late Holocene, from a phase when the lake was connected to the sea to a more stable state conducive to varve formation.
Milena S. Kury   +6 more
wiley   +1 more source

Clay Minerals – Mineralogy and Phenomenon of Clay Swelling in Oil & Gas Industry

open access: yes, 2015
Among the minerals found in the earth's crust, clay minerals are of the widest interest. Due to the specific properties such as plasticity, absorbing and catalytic properties clay minerals are used in many industries (oil & gas, chemistry, pharmacy ...
B. Karpiński, M. Szkodo
semanticscholar   +1 more source

Late Pleistocene to Holocene sedimentation in the Great Blue Hole (Lighthouse Reef, Belize): Results from a 30 m long core

open access: yesThe Depositional Record, EarlyView.
A 30 m long sedimentary succession at the bottom of the Belize Blue Hole represents terrestrial cenote (12.5–7.2 ka BP), restricted marine swamp (7.2–5.7 ka BP) and fully marine lagoonal phases (5.7–0 ka BP) on Lighthouse Reef carbonate platform. Post‐glacial and Holocene sea‐level rise largely controlled the sedimentological, faunal and floral changes
Eberhard Gischler   +12 more
wiley   +1 more source

Mineralogical characterisation and processing of some industrial minerals from Uganda [PDF]

open access: yes, 1992
This report describes the mineralogical characterisation and processing of several industrial minerals collected by Dr DJ Morgan in October 1991 during a visit to Uganda (Visit report WG/91/31R).
Mitchell, C.J.
core  

Development of Mineralogy—IV [PDF]

open access: yesScientific American, 1893
n ...
openaire   +1 more source

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