Jökull - 01.12.1987, Page 61

TABLE I.
Lithofacies code and descriptions of lithofacies in the Melabakkar-Ásbakkar sediments
Tafla 1: Setlykill og lýsingar seteininga
Facies code Lithofacies Comments
Dmu Diamicton, matrix- supported, unstratified Massive to weakly stratified (stratification less than 10% of unit thickness), silt-sand-gravel-boulder admixture
Dms Diamicton, matrix- supported, stratified Clear textural differentiation or structure within a diamiction
Dcu Diamicton, clast- supported, unstratified Massive silt-sand-gravel-boulder admixture with clast-to-clast contact gravel and boulder clasts
Gu Gravel, massive to crudely stratified Crude horizontal stratification, imbrication, minor sand and silt lenses may occur
Gs Gravel, stratified Clear stratification, often alternating openwork and matrix- rich gravels, normal grading, imbrication, minor silt- and sand-lenses
Ggn/Ggr Gravel, normal/reversed grading
Gp Gravel, stratified Planar cross-stratification, angular to tangential based foresets, alternating clast- and matrix supported foresets, reactivation surfaces
G(l) Gravel Lag deposits
B Boulders Lag deposits
Su Sand, massive to weakly stratified Poorly sorted, may be silty or gravelly, minor intrabeds of sorted sand and silt, dish structures
Ss Sand, stratified Planar-parallel bedding, clear stratification, fine to coarse sand, normal grading, occasional rippled surfaces, intralami- nae of silt, occasional gravel trains
Sp Sand, stratified Planar cross-stratification, angular to tangential based, normal graded foresets, poorly sorted, may be silty, sometimes in- terbedded gravel trains or diamicton lenses, reactivation sur- faces
St Sand, stratified Trough cross-stratification, poorly sorted, pebbly
S1 Sand, laminated Fine sand to poorly sorted sand, laminated to thin-bedded, usually interbedded with silt. Soft sediment deformations, pa- leocurrent indication structures
Fu Fines (silt, clay), unstratified Massive to weakly stratified, usually sandy. Discontinuous intralaminae of sand
F1 Fines (silt, clay), planar parallel lamination, laminated sometimes sandy, usu- ally interbedded with sorted sand, occasional rippled surfaces, soft sediment deformations
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