Algal Branch Packstone facies, Upper Coralline Limestone Fm. (Miocene of Malta)

Where: Malta (35.9° N, 14.4° E: paleocoordinates 35.7° N, 14.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Upper Coralline Limestone Formation, Messinian (7.2 - 5.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: perireef or subreef; packstone

• This facies is frequently interbedded with the Rhodolith Pavement facies and commonly occurs as units up to 3.4 m in thickness. The unit is composed of massive, bioturbated beds. This sediment frequently forms the final deposit capping the bioherm. The principal grain type in the rock is coralline algal debris (28%). Echinoid fragments {1.4%) and entire rotaliid foraminifera (2.9%) are the only features which appear to be slightly better represented in this facies than in previous ones. The overall allochemical similarity and close association suggest convincingly that the Algal Branch Packstone are in part eroded and transported material from the Rhodolith Pavement facies.
• Packstone

Size classes: mesofossils, microfossils

Primary reference: D. W. J. Bosence. 1983. Coralline algae from the Miocene of Malta. Palaeontology 26:147-173 [W. Kiessling/M. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 141543: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 28.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
 Pectinida - Pectinoidae
 Echinolampadoida - Echinolampadidae
Echinolampas sp. Gray 1825 sea urchin
 Clypeasteroida - Clypeasteridae
Clypeaster sp. Lamarck 1801 sand dollar
 Corallinales -
 Corallinales - Hapalidiaceae
Mesophyllum commune, "Lithothamnium praefructiculosum" = Lithothamnion
Mesophyllum commune Lemoine 1939
"Lithothamnium praefructiculosum" = Lithothamnion
 Corallinales - Corallinaceae