Results 141 to 150 of about 18,367 (247)

Porosity Preservation in Deeply Buried (8500 m) Jurassic Calcareous Mudstones of the Vienna Basin (Austria)

open access: yesTerra Nova, Volume 38, Issue 5, Page 306-313, October 2026.
ABSTRACT Significant porosity of more than 5% was found at depths of more than 8500 m in poorly sorted, calcareous mudstones of the Malmian Mikulov Formation. These overpressured rocks are the main hydrocarbon source rock in the Vienna Basin. Core samples from present‐day depths of 8150 m to 8550 m were analysed using X‐ray diffraction and scanning ...
Susanne Gier   +3 more
wiley   +1 more source

Cretaceous-Paleogene boundary (KPB) Fish Clay at Højerup (Stevns Klint, Denmark): Ni, Co, and Zn of the black marl

open access: yesGeologica Acta, 2009
The black marl of the Fish Clay at Højerup is mainly made up of biogenic calcite and cheto-Mg-smectite. We suggest that the formation of the smectite occurred during the latest Maastrichtian (or earlier) and that it represents a short period of rapid ...
P.I. PREMOVIC   +2 more
doaj  

Differentiation of substance composition in the Typical Agrochernozems (Haplic Chernozems) of the Western Ukrainian Forest-Steppe

open access: yesЖурнал Белорусского государственного университета: География, геология, 2017
The study found in the Wet Atlantic facies of the Forest-Stepper Сhernozems of Ukraine soil formation leads to the vertical redistribution of Chernozem soil substance and formation of the mineral soil profile differentiated to varying degrees by ...
Ihor Y. Papish
doaj  

Hydroclassification of Smectite Clays

open access: yes, 2006
Šinī darbā apskatīta Pampāļu mālu hidroklasificēšana. Novērtēti faktori, kas ietekmē mālu hidroklasificēšanu – vides pH, nātrija pirofosfāta koncentrācija. Veikta organomālu sintēze no iegūtajiem mālu smektītiem.
Vaičulis, Andis
core  

Interaction of aqueous Au species with goethite, smectite and kaolinite

open access: yes, 2004
Interaction of aqueous Au species with goethite, smectite and ...
Cohen, David, Waite, David
core  

Analysis of Smectite-Illite within the White River Group

open access: yes, 2013
This last summer work on fractures and fracture systems within the Miocene (23-5.3 million year old) age White River Group strata was focused on two locations in northwestern Nebraska.
Halligan, Theresa
core   +1 more source

Redox Properties of Structural Fe in Clay Minerals: 5. The Role of Fe in the Tetrahedral Sheets of Synthetic Smectites. [PDF]

open access: yesEnviron Sci Technol
Pothanamkandathil V   +6 more
europepmc   +1 more source

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