UNIVERSI
TÄ
TS-
BIBLIOTHEK
P
ADERBORN
Anmelden
Menü
Menü
Start
Hilfe
Blog
Weitere Dienste
Neuerwerbungslisten
Fachsystematik Bücher
Erwerbungsvorschlag
Bestellung aus dem Magazin
Fernleihe
Einstellungen
Sprache
Deutsch
Deutsch
Englisch
Farbschema
Hell
Dunkel
Automatisch
Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist
gegebenenfalls
nur via VPN oder Shibboleth (DFN-AAI) möglich.
mehr Informationen...
Universitätsbibliothek
Katalog
Suche
Details
Zur Ergebnisliste
Ergebnis 4 von 461
Datensatz exportieren als...
BibTeX
Self-accelerating volumetric dolomite-for-calcite replacement: A possible mechanism for high-temperature dolomitization?
Carbonates and evaporites, 2020-06, Vol.35 (2), Article 33
Morrow, David W.
2020
Details
Autor(en) / Beteiligte
Morrow, David W.
Titel
Self-accelerating volumetric dolomite-for-calcite replacement: A possible mechanism for high-temperature dolomitization?
Ist Teil von
Carbonates and evaporites, 2020-06, Vol.35 (2), Article 33
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2020
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Quantitative calculations with the geochemical program PHREEQC© for the replacement of calcite by dolomite in brine solutions were performed under the condition that total mineral rock volume is conserved. These simulations, using brine solutions derived from the evaporation of two “end member” compositions for Phanerozoic seawater, indicate that calcium (Ca 2+ ) molalities in solution do not increase exponentially, but instead exhibit monotonically decreasing rates of increase. Simulated rates for calcite dolomitization also decrease monotonically. This indicates that replacement of dolomite by calcite under a stricture of rock volume conservation does not cause a rapidly increasing rate of dolomitization in a self-accelerating manner, but rather is self-limiting. Preservation of sedimentary microfabrics in dolomitized limestones, although consistent with the recently proposed mechanism of dolomite-growth-driven pressure solution mechanism for volumetric dolomitization, is not definitive, as near-surface meteoric diagenesis of Pleistocene limestones causes similar preservation of microfabrics where aragonitic paleofauna and sediments have been replaced by calcite and dolomite in open fluid-rock systems.
Sprache
Englisch
Identifikatoren
ISSN: 0891-2556
eISSN: 1878-5212
DOI: 10.1007/s13146-020-00565-w
Titel-ID: cdi_proquest_journals_2373447074
Format
–
Schlagworte
Brines
,
Calcite
,
Calcium
,
Calcium ions
,
Diagenesis
,
Dolomite
,
Dolomitization
,
Dolostone
,
Earth and Environmental Science
,
Earth Sciences
,
Evaporation
,
Geology
,
High temperature
,
Mineral Resources
,
Mineralogy
,
Original Article
,
Phanerozoic
,
Pleistocene
,
Preservation
,
Rocks
,
Seawater
,
Sediments
,
Stricture
,
Temperature
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von
bX