TY - JOUR
T1 - Molybdenum-uranium-vanadium geochemistry in the lower Paleozoic Alum Shale of Scandinavia
T2 - Implications for vanadium exploration
AU - Bian, Leibo
AU - Schovsbo, Niels H.
AU - Chappaz, Anthony
AU - Zheng, Xiaowei
AU - Nielsen, Arne Thorshøj
AU - Ulrich, Thomas
AU - Wang, Xibo
AU - Dai, Shifeng
AU - Galloway, Jennifer M.
AU - Małachowska, Aleksandra
AU - Xu, Xuhui
AU - Sanei, Hamed
N1 - Funding Information:
We acknowledge the financial and in-kind support of the Lower Paleozoic Shale Consortium including the Danish Hydrocarbon Research & Technology Centre (DHRTC), Total E&P, Geological Survey of Denmark and Greenland (GEUS), and China University of Petroleum (Beijing). This paper is also a contribution to the GeoCenter Danmark project 2017-3 (awarded to Schovsbo and Nielsen). Edvard Pukkonen is thanked for providing sample material (Core 601) from Estonia. Bian thanks the China Scholarship Council for financial support.
Funding Information:
We acknowledge the financial and in-kind support of the Lower Paleozoic Shale Consortium including the Danish Hydrocarbon Research & Technology Centre (DHRTC) , Total E&P, Geological Survey of Denmark and Greenland (GEUS) , and China University of Petroleum (Beijing) . This paper is also a contribution to the GeoCenter Danmark project 2017-3 (awarded to Schovsbo and Nielsen). Edvard Pukkonen is thanked for providing sample material (Core 601) from Estonia. Bian thanks the China Scholarship Council for financial support.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/4/15
Y1 - 2021/4/15
N2 - This paper investigates the hyper-enrichments of molybdenum (Mo), uranium (U), and vanadium (V) in the lower Paleozoic, Alum Shale of Denmark, Sweden, Norway, and Estonia. Molybdenum and U are mainly associated with organic matter and the highest contents are found in the Furongian part of the Alum Shale. This Furongian hyper-enrichment of Mo and U commenced with the Steptoean Positive Carbon Isotope Excursion (SPICE) event. The temporal distribution of V content increases moderately from the Miaolingian to the Furongian, followed by a significant increase in the Early Ordovician. In addition, the vanadium content generally increases towards the offshore, distal part of the Alum Shale basin. The geochemical affinity of V seems to change from organic matter in the Cambrian to minerals in the Early Ordovician. The hyper-enrichment of V in the Lower Ordovician succession appears to result from upwelling of deep oceanic water. The spatial distribution of V in the Alum Shale indicates that the highest concentrations are located in Scania, southernmost Sweden.
AB - This paper investigates the hyper-enrichments of molybdenum (Mo), uranium (U), and vanadium (V) in the lower Paleozoic, Alum Shale of Denmark, Sweden, Norway, and Estonia. Molybdenum and U are mainly associated with organic matter and the highest contents are found in the Furongian part of the Alum Shale. This Furongian hyper-enrichment of Mo and U commenced with the Steptoean Positive Carbon Isotope Excursion (SPICE) event. The temporal distribution of V content increases moderately from the Miaolingian to the Furongian, followed by a significant increase in the Early Ordovician. In addition, the vanadium content generally increases towards the offshore, distal part of the Alum Shale basin. The geochemical affinity of V seems to change from organic matter in the Cambrian to minerals in the Early Ordovician. The hyper-enrichment of V in the Lower Ordovician succession appears to result from upwelling of deep oceanic water. The spatial distribution of V in the Alum Shale indicates that the highest concentrations are located in Scania, southernmost Sweden.
KW - Alum Shale
KW - Cambrian
KW - Molybdenum (Mo)
KW - Ordovician
KW - Scandinavia
KW - Uranium (U)
KW - Vanadium (V)
UR - http://www.scopus.com/inward/record.url?scp=85103277347&partnerID=8YFLogxK
U2 - 10.1016/j.coal.2021.103730
DO - 10.1016/j.coal.2021.103730
M3 - Article
AN - SCOPUS:85103277347
SN - 0166-5162
VL - 239
JO - International Journal of Coal Geology
JF - International Journal of Coal Geology
M1 - 103730
ER -