Sumatra, Sunda Shelf, Natuna - Bibliography of Indonesia Geology

Westerveld, J. (1936)- On the geology of North Banka (Djeboes). Proc. Kon. Nederl. Akad. Wetensch.,
Amsterdam, 39, 9, p. 1122-1132. (online at: http://www.dwc.knaw.nl/DL/publications/PU00016981.pdf)
(Survey of NW Banka Island. Monotonous series of presumably Triassic intensely folded dark shales and
yellowish sandstones with a large (~100km) intrusive granite mass. Presence of radiolaria similar to Triassic
rocks in Malaya, etc.)
Westerveld, J. (1936)- The granites of the Malayan tin belt compared with tin granites from other regions. Proc.
Kon. Ned. Akad. Wetensch., Amsterdam 39, p. 1199-1209.
(Brief overview, without figures, of tin granites of Sumatra (Banka, Billiton, etc.), Malay Peninsula, Cornwall,
Saxony, Bolivia and South Africa)
Westerveld, J. (1937)- The tin ores of Banca, Billiton and Singkep, Malay Archipelago- a discussion. Econ.
Geol. 32, p. 1019-1041.
(Discussion of Wing Easton 1937 paper, arguing that (1) there is one granite instead of two; depth of granitic
intrusion and mineralization was deep; some contact-metamorphism is present; tin mineralization is not
Pliocene but is post-Triassic and probably pre-Cenomanian, etc.)
Westerveld, J. (1941)- Mineralisatie op de tineilanden. Jaarboek Mijnbouwk. Stud. Delft 1938-1941, p. 187-
233.
('Mineralization on the tin islands'. Rel. comprehensive review of geology and tin mineralization on Banka and
Billiton)
Wikarno, U., A.D. Suyatna & S. Sukardi (1988)- Granitoids of Sumatra and the tin islands. In: C.S. Hutchison
(ed.) Geology of tin deposits in Asia and the Pacific, Springer Verlag, Berlin, p. 572-589.
Wilhelm, C.H.J. (1928)- De tinertsafzettingen van het eiland Singkep en de genese der alluviale afzettingen.
Thesis University of Delft, Waltman, Delft, 126 p.
('The tin ore deposits of Singkep island (E Sumatra) and the genesis of the alluvial deposits')
Wing Easton, N. (1925)- Billiton- herinneringen. Verhand. Geol. Mijnbouwk. Gen. Ned. Kol., Geol. Ser. VIII,
(Verbeek volume), p. 125- 154.
('Billiton memories'. Geological observations on geology and tin mineralization of Belitung island, made in
1919/1920)
Wing Easton, N. (1921)- The billitonites (an attempt to unravel the tectite puzzle). Verhand. Kon. Akad.
Wetensch. Amsterdam, sect. 2, 22, 2, 32 p.
(On 'billitonites' (tektites; glass pebbles associated with meteorite impacts) from Belitung Island (also known
from Malaysia, Indochina, Philippines; HvG). First reported by Verbeek (1887) and Krause (1898))
Wing Easton, N. (1937)- The tin ores of Banca, Billiton and Singkep, Malay Archipelago, Part I. Economic
Geol. 32, 1, p. 1-30.
(First overview in English languge of geology and tin mining on Bangka, Belitung and Singkep- part 1. Most of
tin produced from secondary placer deposits, but primary mineralization in veins in granite. WE believes there
are two groups of granites, one older than the folded sediments without tin and one younger, Cretaceous age
with tin mineralizion. Mineralization age believed to be Pliocene. Conclusions disputed by Westerveld 1937)
Wing Easton, N. (1937)- The tin ores of Banca, Billiton and Singkep, Malay Archipelago, part II. Economic
Geol. 32, 2, p. 154-182.
(Overview in English languge of geology and tin mining on Bangka, Belitung and Singkep- part 2. On ore
deposits, mainly formation and distribution of valley placer deposits called 'kaksa beds')
Wisoko (1981)- Geologi endapan timah primer di Pemali, Bangka. Proc. 10th Ann. Conv. Indon. Assoc. Geol.
(IAGI), p. 193-203.
('Geology of primary tin deposits in Pemali, Bangka')
Bibliography of Indonesia Geology v. 4.1 141 www.vangorselslist.com July 2012