scholarly journals Mississippi Valley-type (MVT) Pb-Zn potential in Middle and Upper Devonian carbonate deposits of northeastern Alberta, and implications for future exploration based on diagenesis and isotope geochemistry

2006 ◽  
Author(s):  
R J Rice ◽  
J Lonnee
Keyword(s):  
Isotope Geochemistry ◽  
Upper Devonian ◽  
Mississippi Valley ◽  
Northeastern Alberta ◽  
Carbonate Deposits ◽  
Mississippi Valley Type ◽  
Valley Type

Lead isotope geochemistry of mississippi valley-type mineralization in the Central Appalachians

1994 ◽  
Vol 89 (7) ◽  
pp. 1492-1500 ◽  
Author(s):  
Stephen E. Kesler ◽  
Martin S. Appold ◽  
George L. Cumming ◽  
Dragan Krstic
Keyword(s):  
Lead Isotope ◽  
Isotope Geochemistry ◽  
Mississippi Valley ◽  
Central Appalachians ◽  
Mississippi Valley Type ◽  
Valley Type

Lead isotope geochemistry of mississippi valley-type deposits of the Southern Appalachians

1994 ◽  
Vol 89 (2) ◽  
pp. 307-321 ◽  
Author(s):  
Stephen E. Kesler ◽  
George L. Cumming ◽  
Dragan Krstic ◽  
Martin S. Appold
Keyword(s):  
Lead Isotope ◽  
Isotope Geochemistry ◽  
Southern Appalachians ◽  
Mississippi Valley ◽  
Mississippi Valley Type ◽  
Valley Type

Sulfur isotope geochemistry of Southern Appalachian mississippi valley-type deposits

1996 ◽  
Vol 91 (2) ◽  
pp. 355-367 ◽  
Author(s):  
Henry D. Jones ◽  
Stephen E. Kesler ◽  
Francis C. Furman ◽  
J. Richard Kyle
Keyword(s):  
Sulfur Isotope ◽  
Isotope Geochemistry ◽  
Mississippi Valley ◽  
Southern Appalachian ◽  
Mississippi Valley Type ◽  
Valley Type

scholarly journals Radiogenic Pb Enrichment of Mississippi Valley-Type Metallic Ore Deposits, Southern Ozarks: Constraints Based on Geochemical Studies of Source Rocks and Their Diagenetic History

Geosciences ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 172
Author(s):  
Jonathan Chick ◽  
Sydney E. McKim ◽  
Adriana Potra ◽  
Walter L. Manger ◽  
John R. Samuelsen
Keyword(s):  
Linear Trend ◽  
Ore Deposits ◽  
Source Rocks ◽  
Mississippi Valley ◽  
Isotopic Signatures ◽  
Boone Formation ◽  
Tripolitic Chert ◽  
Geochemical Studies ◽  
Mississippi Valley Type ◽  
Valley Type

Southern Ozark Mississippi Valley-type ores are enriched in radiogenic Pb, with isotopic signatures suggesting that metals were supplied by two end-member components. While the less radiogenic component appears to be derived from various shale and sandstone units, the source of the more radiogenic component has not yet been identified. Analyses of cherts from the Early Ordovician Cotter Dolomite and tripolitic chert from the Early Mississippian Boone Formation contain highly radiogenic Pb, with isotopic ratios comparable to those of ores. However, most samples have lower 208Pb/204Pb and 207Pb/204Pb for a given 206Pb/204Pb compared to ores. These relationships demonstrate that the enriched Pb isotopic values of the ore array cannot be related to the host and regional lithologies sampled, suggesting that the source of high ratios may lay further afield. The slope of the linear trend defined by the Pb isotope ratios of ores corresponds to an age of about 1.19 Ga. Therefore, an alternative for the linear array is the involvement of Precambrian basement in supplying ore Pb. Rare earth element patterns show that diagenetic processes involving the action of groundwater and hydrothermal fluids affected the sampled lithologies to various degrees, with Cotter Dolomite having experienced the highest degree of alteration.

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