Mire death in the Bowen to Scott-Denison interval, Collinsville Coal Measures, Queensland
Titel:
Mire death in the Bowen to Scott-Denison interval, Collinsville Coal Measures, Queensland
Auteur:
Woolfe, K. J. Crosdale, P. J. Slater, R.
Verschenen in:
Australian journal of earth sciences
Paginering:
Jaargang 43 (1996) nr. 1 pagina's 91-96
Jaar:
1996-02
Inhoud:
Element-scale mapping of highwall sequences in the Bowen Central Open Cut, Collinsville, has revealed previously undocumented relationships between coal seams and their adjacent sediments. The Bowen mire was overwhelmed by laterally extensive muddy elements (lake/lagoon) as sea-level rose, forming a flat land surface. In contrast, the Little Bowen, Potts and Scott-Denison mires were progressively overrun by small-scale channels which slowly encroached upon them as sediment supply increased. The two upper mires developed by blanketing an irregular surface of up to 8 m of relief. Notwithstanding the presence of mires, siliciclastic flood-plain sedimentation was either absent or not preserved.