Petrographic and palynological investigations of Sinanpaşa (Afyon) Miocene coals

Year 2018, Volume: 156 Issue: 156, 151 - 166, 27.06.2018

Elif Akıska

https://doi.org/10.19111/bulletinofmre.363345

Abstract

In this study, petrographical
and palynological analyses of coal samples from two regions (the Kırka region
in the south, and the Karacaören region in the north) of the Sinanpaşa (Afyon)
Neogene basin were performed. The coal-bearing Neogene sediments indicate the
occurrence of fi ve facies: paleosol, matrix-supported conglomerate,
coal-bearing mudstone, sandstone-claystone and laminated mudstones. Coal layers
are mainly within coal-bearing mudstone facies. In addition, there are various
types of coalifi ed materials in matrix-supported conglomerate and
sandstone-claystone facies. Based on coal petrography, an interpretation of the
coal-forming environment was made. The investigated coals mainly contain a
huminite maceral group. From the refl ection values (Rmax), these coals
can be classifi ed as sub-bituminous in rank, and as being deposited in swamp
zones associated with limnic environments. The palynological data indicates
that all studied coal-bearing units are of Mid-Miocene age. On the other hand,
based on MAT, CMT, WMT and MAP parameters, it can be stated that at that time
climatic conditions changed seasonally in the study area. Humid climatic
conditions prevailed during the period when the peat was formed, then later
transformed into the coal layers examined in this manuscript.

Keywords

maceral, palynology, paleoclimate, Afyon, Coal petrography

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