Iron rich conglomerate of Ma'Okil Formation at Bukit Lop, Chaah, Johor

Mohd. Shafeea Leman, Y. Zakariah

Research output: Contribution to journalArticle

Abstract

Matahari Mining Sdn. Bhd. which operate at the southeastern spur of Bukit Lop, near Chaah, exposed about 40 m thick of conglomerate which belongs to the continental Upper Mesozoic Ma'Okil Formation. The conglomerate unit overlies a massive andesitic volcanic rock. The lowest bed of the conglomerate is essentially made of angular to subrounded pebbles and cobbles of hematite derived from the nearby primary hematite ore body. The clasts of this conglomerate are poorly sorted and the matrix is made of very fine-grained hematite. Iron clasts are also present in the overlying conglomerate, the percentage and size of which decrease toward the top of the conglomerate unit. This in situ nature of iron conglomerate deposition suggests that the iron clasts were deposited as an alluvial fan deposit along the foot of a fault scarp. The absence of goethite cement or matrix suggests that the depositional environment of the conglomerate was not very much influenced by water. -from Authors

Original languageEnglish
Pages (from-to)293-299
Number of pages7
JournalWarta Geologi
Volume21
Issue number5
Publication statusPublished - 1995
Externally publishedYes

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conglomerate
iron
clast
hematite
fault scarp
matrix
ore body
pebble
alluvial fan
goethite
depositional environment
volcanic rock
cement

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Leman, M. S., & Zakariah, Y. (1995). Iron rich conglomerate of Ma'Okil Formation at Bukit Lop, Chaah, Johor. Warta Geologi, 21(5), 293-299.

Iron rich conglomerate of Ma'Okil Formation at Bukit Lop, Chaah, Johor. / Leman, Mohd. Shafeea; Zakariah, Y.

In: Warta Geologi, Vol. 21, No. 5, 1995, p. 293-299.

Research output: Contribution to journalArticle

Leman, MS & Zakariah, Y 1995, 'Iron rich conglomerate of Ma'Okil Formation at Bukit Lop, Chaah, Johor', Warta Geologi, vol. 21, no. 5, pp. 293-299.
Leman, Mohd. Shafeea ; Zakariah, Y. / Iron rich conglomerate of Ma'Okil Formation at Bukit Lop, Chaah, Johor. In: Warta Geologi. 1995 ; Vol. 21, No. 5. pp. 293-299.
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