Journal article

The middle Miocene Yallourn coal seam - The last coal in Australia the last

GR Holdgate, I Cartwright, DT Blackburn, MW Wallace, SJ Gallagher, BE Wagstaff, Li Chung

INTERNATIONAL JOURNAL OF COAL GEOLOGY | ELSEVIER | Published : 2007

Abstract

The 100-m thick Middle Miocene Yallourn brown coal seam was the last of the major Latrobe Valley Group seams to form in the Gippsland Basin (southeastern Australia) and the final major coal to form in Australia. Coal deposition coincided with the Middle Miocene climatic optimum. During this warm period of relatively high sea-levels, high water tables and relatively high subsidence rates, a 565 km2 area of alternating eutrophic and ombrogenous peat swamp developed at the western end of the Latrobe Valley to form the Yallourn Seam. Stratigraphic units of the seam contain a high sclerophyll plant component and abundant charcoal, suggesting seasonal dry periods alternated with wet warm condition..

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