4 results match your criteria Carbonates And Evaporites[Journal]

  • Page 1 of 1

Magnesium calcite in Muschelkalk limestones of the Polish part of the Germanic Basin.

Carbonates Evaporites 2018 5;33(4):801-821. Epub 2018 Mar 5.

Department of Applied Geology, Faculty of Mining and Geology, Silesian University of Technology, ul. Akademicka 2, 44-100 Gliwice, Poland.

Magnesium calcite, which is usually observed in many natural low-temperature environments, was identified in Triassic limestones of the Polish part of the Germanic Basin. The occurrence of unstable magnesium calcite in Triassic limestones is remarkable. High-Mg calcite was identified in all beds of the Muschelkalk Karchowice Formation: Lower Crinoidea Beds, Lower Biohermal Beds, Upper Crinoidea Beds and Upper Biohermal Beds. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s13146-018-0437-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6244636PMC

Tectonic evolution and paleokarstification of carbonate rocks in the Paleozoic Tarim Basin.

Carbonates Evaporites 2017 14;32(4):487-496. Epub 2016 Jul 14.

Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, 214126 Jiangsu China.

Thick carbonate rocks were developed in the depression of the Tarim craton during the Cambrian-Middle Ordovician periods. The compressional tectonic movement during the Middle Caledonian-Hercynian created the paleouplifts, which became the base for the paleokarst in the Ordovician carbonate rocks. Based on the large quantity of seismic, drilling, and geological outcrop data, this study analyzed the paleokarst development in relation to the multi-stage tectonic movements in the Paleozoic Era and different stages of karstification and hypothesized paleogeomorphology and paleokarst water system of those stages. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s13146-016-0307-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5674128PMC
July 2016
10 Reads

Understanding changes in the hydrological behaviour within a karst aquifer (Lurbach system, Austria).

Carbonates Evaporites 2016 4;31(4):357-365. Epub 2013 Oct 4.

Institute for Earth Sciences, University of Graz, Heinrichstra├če 26, 8010 Graz, Austria.

A thorough data analysis combined with groundwater modelling was conducted in an Austrian binary karst aquifer to better understand changes in the hydrological behaviour observed at a karst spring. During a period of 4 years after a major flood event the spring hydrograph appears to be more damped with lower peak flow and higher baseflow than in the years before. The analysis of the hydrograph recession suggests that the observed hydrological change is caused by changes within the karst system rather than by varying hydro-meteorological conditions. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s13146-013-0172-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5180835PMC
October 2013
4 Reads

4.6-billion-year-old aragonite and its implications for understanding the geological record of Ca-carbonate.

Carbonates Evaporites 2015 13;30(4):477-481. Epub 2015 Aug 13.

School of Geographical and Earth Sciences, Gregory Building, Lilybank Gardens, Glasgow, G12 8QQ UK.

Owing to its diagenetic instability, aragonite is rare in the geological record and almost entirely absent from pre-carboniferous sedimentary rocks. The former presence of this mineral in older deposits has to be inferred from petrographic, chemical or isotopic proxies. Crystals of aragonite that formed around 4563 million years ago occur in carbonaceous chondrite meteorites, showing that under certain conditions, the orthorhombic polymorph of Ca-carbonate can survive essentially indefinitely. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s13146-015-0257-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7175724PMC
  • Page 1 of 1