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Core photographs showing stratification in bay-fill deposits. Cores are 13 cm (5 in.) in diameter. A. Burrowed and laminated silts and clays of the interdistributary bay environment. B. Ripple laminations and burrowed zones in silts and silty clays in ...
Core photographs showing stratification in bay-fill deposits. Cores are 13 cm (5 in.) in diameter. A. Burrowed and laminated silts and clays of the interdistributary bay environment. B. Ripple laminations and burrowed zones in silts and silty clays in the lower part of the bay fill sequence. C. Well-laminated silts and silty sands of the crevasse infilling. The sandy layers often display small climbing ripple sequences. D. Cross-laminated silts and sands of the crevasse infilling sequence. E. Well-sorted and cross-laminated sand layers alternating with silts and silty clays associated with the lower part of the distributary-mouth bar of the progradi g distributaries. F. Cross-stratified sands and silty sands in the lower part of the distributary-mouth bar (bay fill sequence). G. Small-scale cross-stratified sands of the distributary-mouth bar (bay fill sequence). H. Well-sorted cross-stratified sands of the upper part of the distributary-mouth bar (bay fill sequence). I. Alternating silts and silty clays of the overbank splays that cap the bay fill sequence. J. High organic clays that form in the marsh environments and cap the bay fill sequence. Coleman, J. M., and D. B. Prior, 1981, Deltaic environments of deposition in P. A. Scholle and D. Spearing, eds., Sandstone depositional environments: AAPG Memoir 31, p. 139-178.