companion
发表于 2025-3-26 23:09:44
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重叠
发表于 2025-3-27 04:17:35
Dolostone-Hosted Sulfide Occurrences in Silurian Strata, Appalachian Basin of New Yorkhe environment of deposition was that of a shoaling-upward sequence from subtidal to intertidal and, subsequently, a supratidal setting followed by subaerial emergence. Under subaerial conditions now mineral-filled former vugs and cavities, and solution breccias, resulted from dissolution of evapori
coddle
发表于 2025-3-27 07:00:39
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网络添麻烦
发表于 2025-3-27 10:08:38
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theta-waves
发表于 2025-3-27 15:26:49
Relations Between Diapiric Salt Structures and Metal Concentrations, Gulf Coast Sedimentary Basin, S decade. Known deposits of this class are of low tonnage (10 to 15 million t, typically) and modest grade (5 to 15% combined Zn + Pb). However, exploration for these deposits has been limited, particularly in the USA, and the average deposit size yet may be found to be greater. Mineralogically, salt
Axon895
发表于 2025-3-27 17:47:10
Sulfide Breccia in Fossil Mississippi Valley-Type Mud Volcano Mass at Decaturville, Missouri, USAand the small carbonate rock fragments show remnant textures typical of marine carbonates. The isotopic compositions of the carbonate fragments and the “flow” carbonates of the breccia compare well with those of sedimentary carbonates from the host sequence of Mississippi Valley-type stratiform lead
Landlocked
发表于 2025-3-28 01:09:23
Trace Element Distribution of Middle-Upper Triassic Carbonate-Hosted Lead-Zinc Mineralizations: The sic. Trace element analysis of 111 sulphide-rich samples, representing the whole deposit, has revealed a zonal distribution for Ge, Cd, Ga, TI, As, Sb. The considered trace elements are linked to sphalerite (Ge-Cd-Ga association) and to specific Pb-As-(Sb)-S phases (Tl-As-Sb association). The obtain
fertilizer
发表于 2025-3-28 02:05:05
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sclera
发表于 2025-3-28 10:11:41
Genesis of Sphalerite Rhythmites from the Upper-Silesian Zinc-Lead Deposits — A Discussion”) known from the Mississippi Valley-type (MVT) Zn-Pb deposits. The origin of these ores is controversial and the discussion reflects the differences in syngenetic versus epigenetic interpretation. Meso-, macro- and microscopic observations lead to the conclusion that the ores are of metasomatic ori
Inoperable
发表于 2025-3-28 14:05:25
Geochemometrical Studies Applied to the Pb-Zn Deposit Bleiberg/Austriaications in an objective, quantitative way..In a case study geochemical information on the Pb-Zn deposit Bleiberg/Austria is analyzed by using statistical-graphical methods studying singleelement features as well as multivariate patterns in an exploratory, unconventional way. The results show that i