发表于 2025-3-26 23:36:35
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Stromatolites of the Middle Proterozoic Belt Supergroup, Glacier National Park, Montana: a Summary and a Comment on the Relationship Between Their Morphology and Paleoenvironmentate, Alberta, and British Columbia (Ross 1963, Harrison 1972). In Glacier National Park the Belt strata are well exposed, relatively unmetamorphosed, and in many places structurally simple. In the central and northeastern part of the park the exposed Belt section is about 2900 m thick and consists o |
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