Abstract ref. 1943:
Outcrops of the Rajamandala Formation limestone near Bandung offer an excellent opportunity to study the facies -relationships of an Early Tertiary reef, which may serve as a model for Tertiary reef exploration in Indonesia. The limestones are exposed along quarries and natural Outcrops along the road from Bandung to Jakarta. These limestones with thicknesses of approximately 600 meters are dipping 40 to 60 degrees toward the south and are involved in asymmetric folding and thrusting towards the north. 
Along its ENE-WSW trending strike the limestone exhibits a graded granular limestone facies representing turbidites at the toe of the basin-slope facies, a foraminiferal algal facies with rudstone facies representing a fore-reef facies, a coral-algal baffiestone to boundstone facies (locally quarried and slabbe as commercial marble), representing, reef ramparts, and a possible milliolid limestone facies with isolated patch reefs, representing the lagoonal back reef facies. 


CORAL DEBRIS RUDSTONE FACIES: 
This facies consists of angular fragments of corals and other limestones, mostly dark grey, embedded in a limemud matrix, which is generally lighter in color. Fragments, poorly sorted, vary in size up to 30 cm. Matrix contains considerable amounts of large foraminifera mainly Lepidocyclina. This facies represents talus-slope debris of coral fragments from the main reef

CORAL BOUNDSTONE FACIES: 


In general this consists of corals in growth position in which the spaces among the coral framework are filled up with muds containing coral debris, large foraminifera, etc. often bound with encrusting red algae. The rocks are light colored and are usually dense, massive, nonbedded to poorly bedded, with no primary porosity. The following sub-facies can be recognized based on the type of corals: 


Massive Head Corals Boundstone: This facies consists mainly of colonies of massive head corals, such as brain-corals, Meandrina etc. with encrusting red algae. A pack-stone facies, rich in foraminifera, is common in between the coral colonies. Worm tubes are very common in this facies, as well as large shells of gastropods and lamelli-branchia. These rocks are very massive, dense and usually white in color. The carbonates are very pure, containing over 95% calcium carbonate. Recrystallization is fairly. This rock is polished into commercial marble, common. This facies presumably represents the reef crest or reef flat. 


Platy Coral Boundstone: This facies consists of platy corals, which are aligned parallel to bedding. Within the framework of these boundstone are pockets of foraminiferal packstone to wackestone. These rocks are mostly massive and poorly bedded, but occasionally show wavy bedding. This facies presumably represents the deeper environment of the reef front. 

Branching Coral Bafflestone: This facies consists primarily of branching corals, mostly in growth position, some as broken fragments ' , embedded in a limemud matrix. Typical corals are Porites, Acropora, -RhabdophyIlia etc. (Gerth, 1933). Branching coral facies presumably represent sub-wayebase environments of the reef front. 


These three sub-facies are usually intermixed together and cannot be differentiated, but often the platy coral boundstone and especially branching corals bafflestone form' definite facies development, such as G. Pawon and G. Manik. 


REEF DEPOSITIONAL ENVIRONMENTS 


Measured sections at several localities and their lateral correlations indicates that depositional environments of the reef related sediments can be identified, based on the lateral facies developments, as well as each individual facies. The following depositional environments can be recognized: 


