Oxygen Isotope Microanalysis By Secondary Ion Mass Spectrometry Suggests Continuous 300-million-year History of Calcite Cementation and Dolomitization in the Devonian Bakken Formation

Abstract

Adrian J. (2018) 'Oxygen isotope microanalysis by secondary ion mass spectrometry suggests continuous 300-million-year history of calcite cementation and dolomitization in the Devonian Bakken Formation.',

Authigenic carbonate burial in the Late Devonian–Early Mississippian Bakken Formation (Williston Basin, USA)

“…), the oxygen data fall largely within the range of observed values, whereas almost all carbon data are depleted relative to the aggregate range. The reported δ 13 C values are comparable to previous δ 13 C measurements of Middle Bakken carbonates, which fall between −6·3‰ to +4·6‰ (Pitman et al ., ; Brennan, ; Brodie et al ., ). These bulk measurements represent admixtures of the Bakken primary and diagenetic carbonate phases; analyses from the secondary ion mass spectrometer (SIMS) resolve in situ variability in Middle Bakken cement phases’ δ 13 C from ca −15‰ to +5‰ (Denny et al ., 2019).…”

“…Previous reconstructions of the Bakken's diagenetic history (Fishman et al ., ; Brennan, ) propose that calcite and dolomite cementation took place relatively early, noting that calcite cement formed in laminae and microfossils prior to post‐depositional compaction. Microscale δ 18 O composition of cements by SIMS and fluid inclusion microthermometry suggest that Middle Bakken calcite cements represent syn‐sedimentary features which began to precipitate from seawater near the sediment–water interface (see link to data in the Acknowledgements ; Brodie et al ., ). Furthermore, microscale measurements of Middle Bakken dolomite crystals demonstrate that the inner zones feature a narrow range of δ 18 O and a wide range of δ 13 C throughout the Williston Basin, suggesting early precipitation from seawater with local sources of 13 C–depleted DIC (for example, SRM), whereas progressive trends in oxygen in the outermost zones are indicative of late‐stage fluid migration and precipitation during burial diagenesis (Denny et al ., 2019).…”

Paleoenvironmental change recorded in submarine fans: the Eocene-Oligocene climate transition in the Alpine foreland basin

“…The samples were collected at ~50 cm intervals, from > 30 cm below the exposed surface and only within hemipelagic sections, thus avoiding potential contamination by allochthonous material. The samples were crushed and their bulk carbonate δ 13 C and δ 18 O values measured using standard techniques (Brodie et al 2018), with 9 repeated measurements of section representative samples yielding a mean measurement error of ± 0.3 for δ 13 C and ± 0.1 for δ 18 O (Fig. 2; S3).…”

Geochemistry Characteristics of Source Rocks and Oil–Source Correlation in the Gaosheng Area of the Western Depression in the Liaohe Basin, Northeastern China

“…With the transfer of oil and gas exploration from conventional to unconventional, tight sandstone oil and gas have become important areas of global gas production. Currently, the best tight oil exploration is in the United States, represented by the Bakken Formation in the Willingston Basin in North America . The successful development of tight oil in America provides a good guide for the exploration of tight oil in the world.…”

“…Currently, the best tight oil exploration is in the United States, represented by the Bakken Formation in the Willingston Basin in North America. 1 The successful development of tight oil in America provides a good guide for the exploration of tight oil in the world. As a result, several tight oil reservoirs have been developed in Canada, Russia, India, Europe, and the Middle East.…”