The Purcell Sill and Swiftcurrent Lake in Glacier National Park, Montana. Purcell Sill is a black layer of diorite rock sandwiched between thin white layers of limestone turned to marble by contact metamorphism, seen here on Mount Gould. A sill is a layer of igneous rock injected as a molten magma between beds of sedimentary rock.
px | px | dpi | = | cm | x | cm | = | MB |
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Creative#:
TOP22241554
Source:
達志影像
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RM
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須由TPG 完整授權
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purcellsillsillmountgouldmt.gouldmountainswiftcurrentlakelakeglaciernationalparkmontanaigneousrockrockformationrocklayerlayeredstratarockstrataintrusionintrusivetabularintrusionplutonicmaficsilldioritecontactmetamorphismstratigraphymountainsrockymountainsnorthamericanunitedstatesgeologygeographylandformlandscapescenicvertical
americancontactdioriteformationgeographygeologyglaciergouldgouldigneousintrusionintrusionintrusivelakelakelandformlandscapelayerlayeredmaficmetamorphismmontanamountmountainmountainsmountainsmt.nationalnorthparkplutonicpurcellrockrockrockrockrockyscenicsillsillsillstatesstratastratastratigraphyswiftcurrenttabularunitedvertical