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文章应用K_Ar法测得会泽铅锌矿床矿体中的蚀变粘土矿物年龄为（176.5±2.5） Ma，该年龄为成矿作用第一阶段黄铁矿形成的年龄，略早于第二阶段方铅矿、闪锌矿和方解石的形成年龄。该年龄表明这些铅锌矿床的形成与峨眉山玄武岩浆活动(251～262 Ma)有明显的时间间隔，而可能为特提斯板块向大陆俯冲期间在大陆边缘岩浆弧后伸展带形成的MVT矿床。
K-Ar Dating of Illitic Fractions of Estonian “Blue Clay” Treated with Alkylammonium Cations
Alkylammonium Cations Estonian “Blue Clay” Illite K-Ar Shale Diagenetic Age
2011/12/2
Abstract: Two clay fractions of a Cambrian claystone from Estonia, consisting essentially of illite and 20% expandable illite-smectite, (I-S) were treated with C12 and C18 alkylammonium cations for K-...
Inter-Basinal Comparison of the Diagenetic Evolution of Illite/Smectite Minerals in Buried Shales on the Basis of K-Ar Systematics
Burial Diagenesis Illite/Smectite Mixed Layers Illitization K-Ar Data Sedimentary Basins Shales
2011/12/27
The K-Ar systematics of illite/smectite (I/S) mixed layers in deeply buried shales from the Gulf Coast, the North Sea and the Mahakam Delta basins have been compared to provide additional perspectives...
Experimental Determination of the Rates of Precipitation of Authigenic Illite and Kaolinite in the Presence of Aqueous Oxalate and Comparison to the K/Ar Ages of Authigenic Illite in Reservoir Sandstones
Illite Kaolinite Precipitation rate Oxalate K/Ar Sandstones North Sea
2011/12/29
The importance of precipitation rate as an effective control on illite and kaolanite formation during diagenesis has been examined by measuring precipitation rates, from Al fluid concentration, in a D...
K/Ar Systematics of Bentonite and Shale in a Contact Metamorphic Zone, Cerrillos, New Mexico
Age dating Bentonite Contact metamorphism Illite Illite/smectite K/Ar ages
2012/1/12
To test the ability of illitic clay minerals to retain argon, K/Ar ages were measured on grain-size separates from the Cretaceous Mancos Shale and associated bentonites that have been transformed into...
K/Ar Systematics of an Acid-Treated Illite/Smectite: Implications for Evaluating Age and Crystal Structure
Acid dissolution Age dating Glauconite Illite/smectite Interstratification Ordering Potassium
2012/1/12
On the basis of progressive acid dissolution the Thompson-Hower model states that mixed-layer glauconite/smectite and illite/smectite contain potassium in two structural sites: a mica-type K position ...