B. Jasin et al., LATE TRIASSIC RADIOLARIA FROM THE KODIANG LIMESTONE, NORTHWEST PENINSULAR MALAYSIA, Journal of Southeast Asian earth sciences, 12(1-2), 1995, pp. 31-39
Two different cherty packstone-wackestone facies are exposed at an aba
ndoned limestone quarry at Bukit Kodiang, Kedah. Chert occurs as disco
ntinuous layers and nodules in the cherty packstone-wackestone. The th
ickness of individual chert layers varies from 2 to 10 cm. The facies
exhibit slump folds. Eighteen species of Radiolaria were identified-Ca
pnuchosphaera triassica De Wever, Triassocampe sulovensis Kozur and Mo
ck, Tetraporobrachia asymmetrica Kozur and Mostler, Xenorum flexum Blo
me, Canoptum laxum Blome, Palaeosaturnalis triassicus Kozur and Mostle
r, Canoptum cf. farawayensis Blome, Pseudostylosphaera cf. spinulosa N
akaseko and Nishimura, Hagiastrum cf. augustum Pessagno, Perispongidiu
m sp., Capnuchosphaera sp., Sarla sp., Kahlerosphaera sp., Canoptum sp
., Latium sp., Paronaella sp., Sontonaella sp., and Spongostylus sp. T
he assemblage indicates that the age of the chert bearing strata range
s from late Carnian to middle Norian, Late Triassic.