Resources - Photos - Ichnofacies
Full-size images of the thumbnails below are accessible for consortium members only.
Photos by Weiguo Li |
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Chondrites, complex root-like burrow of irregularly branching and feeding tunnels of uniform diameter which never anastomose, interpenetrate, or cut across one another. It represents a complex deposit-feeding strategy and marks a full marine condition. |
Diplocraterion, vertical U-shaped spreiten burrow. It represents the behavior of certain suspension feeders. It's a common member of the distal of the Skolithos ichnofacies in middle shoreface settings. |
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Glossifungites, represents an assemblage of burrows (vertical, U-shaped, or sparsely branched) that occur in firm, but not lithified substrata. The surfaces on which Glossifungites occur are interpreted to have formed during transgression when the shoreface erodes the previous sediments and expose the firm but unlithified substrata. |
Ophiomorpha, simple to complex burrow distinctly lined with agglutinated pelletoidal sediment. Ophiomorpha represents the dwelling burrows of suspend-feeding shrimp. Commonly associated with the Skolithos ichnofacies. In the study area usually occurs in the upper shoreface sandstone. |
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Rhizocorallium, straight to sinuous, horizontal, U-shaped spreiten burrows. Tubes are usually distinct and more or less parallel. Spreite are typically progressive. Burrow infill is typically identical to the matrix, but in some cases is finer grained. It represents the dwelling/feeding behavior of a deposit feeder. Generally occurs in full marine conditions in the distal Cruziana ichnofacies. |
Rosselia, vertical to inclined, cylindrical, straight to slightly curved burrow with one opening expanded to a funnel shape. It represents the feeding/dwelling behavior of a deposit feeders. Generally associated with the proximal Cruziana ichnofacies in full marine conditions. |
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Skolithos, single entrance, cylindrical to subcylindrical, straight to curved, vertical to sub vertical unbranched burrow. Unlined or lined. Skolithos represents the dwelling burrow of suspended-feeding vermiform organism. |
Thalassinoides, relative large horizontal (with some irregularly inclined) burrow system with typical "T" or "Y" shape branching. Enlargement occurs at bifurcations. Thalassinoides represents dwelling/feeding burrow of a deposits-feeding crustacean. Associated with the Cruziana ichnofacies in the lower shoreface to offshore environments. In the study area, it also occurs in low-diversity brackish water suites. |
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Scoyenia, horizontal to inclined burrow, straight to slightly curved, with a "rope-like" architecture. Individual burrows common cross one another and with striated wall linings. Commonly occur in the nonmarine fluvial strata. |
Teredolites, a club-shaped, vertically to obliquely oriented boring that typically shows annulations on the boring wall and are preserved in woodgrounds (coal beds) or as boring casts from woodgrounds. Teredolites is interpreted as a combined feeding and dwelling trace made by wood-boring bivalves in woodgrounds that were submerged under marine water. |
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Tidal Ichnofossils |