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l' ____ ~ __ ~ __ ~ ____ ~ __ ~· J. J. HERMES and D. R. DE VLETTER: CONTRIBUTlON TO THE PETROGRAPHY OF BINTAN (RIOUW~LINGGA ARCHIPELAGO). 515.516 517. Tg TONOANG 520. SEBONG PELANGKA o 713715.716 71B. 721-724. 555 SIK1RV> 0" ('j/ Tg.5EBONG 556. \; Bt. BINTAN KETJIL ~272-276 o .". " 048 572-575.582. ':, .. ... : ..... 267-211. (MANTJIN G. KIDJANG N T A N G.lENKO(A5 o Sketch map of BINTAN. (/ MANTANG f; .... :.: ': :1 GRANITI(; ROCKS 261 o 10 Km 83 -87.97.104.100, trom Tel.ng. 4142 Proc. Ned. Akad. v. Wetenseh., Amsterdam, Vol. XLV, 1942.
Geology. - On rocks trom Karimon (Riouw Archipelago). By B. V. RAADSHOOVEN and J. SWART. (Communicated by Prof. L. RUTTEN.) lntrodllction. (Communicated at the meeting of December 27, 1941.) The examined material has been given to the "Min.-Geol. Inst." at Utrecht by Dr. P. M. ROGGEVEEN, who in 1930, in charge of the Billiton Mij" made geological researches on some islands of the Riouw Archipelago. We are indebted to this company for having placed ROGGEVEEN's reports at OUT disposal. For a list of publications concerning the tin-islands we refer to BOTEF. (1). R. EVEFWIJN assisted by J. A. FLElJI,y made during 1863/1864 explorations for tin~ore on some islancls of the Riouw Archipelago (2). He established that the greater part of Karimon consists of granite and some protogene and a rock apparently a greisen. With the exception of quaternary deposits there are no sediments. As the rich tin~OI'e deposits of Banka are mostly found in sediments, he supposed that Karimon would prove to be pOOl' in tin. The more extensive report of A. CHR. D. BOTI-lÉ (1, 3) is based on observations by BOTHÉ, BOERS, DE KHOES and LonI. \V. F. GISOLF determined the rocksamples. He conc1uded that the surface of Karimon has cut the upper part of a gl'anite~batholith, consisting of granites, biotite~, aplitic biotite~, and toU'rmaline~granites and also of greisen. Sediments are found on the N.E. part of Karimon and on Karimon Anak. They are strongly contact~metamorphic slates, quartzites, cherts, conglomerates and limestones, enc10sed as roofpendants in the granite. Possibly the contact~metamorphic limestones of Malarco are of the same age as the Raub Series of Malaya (Carboniferous). According to ROGGEVEEN (in his Reports), the oldest formation is formecl by the schistose hornblende-schists of P. Tembias and the amphibolitic rocks of P. Merak and Tandjong Malolo, which are probably synchronous with these schists. Thc rocks of P. Merak have been injected by granitic rocks (pcgmatites, aplitic graphic granites etc.). He considers the rocks of Tembias as regionally metamorphosed scdiments; the amphibolitic rocks of Merak and Tg. Malolo probably, according to him, belong to the same scdiment~ formation; they have been metamorphosed by the Karimon~granite. The determination of the samples taught us, however, that all these rocks are not of para-, but of ortho-natul'e. Gabbros, altel'ed gabbros and diallagites with their meta~ morphics could be distinguished. ROGGEVEEN's granitie injections proved to be gabbro~ aplites and plagi~aplites. As sediments, following in age on the amphibolites, ROGOEVEEN regards the strong contact-metamorphic calcareous and argillaceous sediments of Karimon Anak and Malarco. He places them in the Carboniferous, for their resemblance with the carboniferou's limestones of Malaya. The only fossil found (Malarco) is a not determin:ed cora1. At Karimon Anak the sediments are changed contact~metamorphically by thc granite into calc-silicatehornfelses. The contactzone is parallel to the strike of the sidements (N. 90 R, 13 N.). At Malarco these rocks occur as inc1usions in a formation, called by ROGGEVEEN microgranite. A sediment~formation that is probably triassic, on the base of fossile-finds in Malaya in a similar formation, is fOllnd on Karimon at the surroundings of Tg. Sebatak and at Malarco. The roeks of Tg. Sebatak are argillaceous and sandy; they are strongly weathered and show lateritization. Their strike is parallel to the coast. Thc contact with the granite is nowhere disclosed. The sediments of Malarco, the samples of which are lacking in our collection, are described as grey sandy shales with a general strike N. 160 E., clipping 27° to the W. They have not been changed by the microgranite, which oc~urs
Page 1 and 2: NEDERL. AKADEMIE VAN WETENSCHAPPEN
Page 3 and 4: 3 Botany. - Absorption and transpor
Page 5 and 6: 6 obtained by conducting into a McI
Page 7 and 8: 10 relatively to A with egual proba
Page 9 and 10: 14 The triple integral here is exte
Page 11 and 12: 18 Aus den letzten drei der Gleichu
Page 13 and 14: 22 dence (figure 2), th is wave can
Page 15 and 16: Literaturangaben vgL V.P, I. 2) Fü
Page 17 and 18: 30 31 Vergleicht man dieses Theorem
Page 19 and 20: also, wegen I k 2 I < 1 und 34 1 >
Page 21 and 22: 38 39 In (38) ist Bemerkt man noch,
Page 23 and 24: t 0 erse 42 Die letztere Reihe dies
Page 25 and 26: 46 Cette inégalité nous donne Ia
Page 27 and 28: 50 Rappelons maintenant quc g(Po) =
Page 29 and 30: 54 we change to a HCl solution of a
Page 31 and 32: 58 morphological chànges with a th
Page 33 and 34: 62 that we modify the mixing propor
Page 35 and 36: 66 è1l1alysis figures (% A and % G
Page 37 and 38: H. G. BUNGENBERG DE JONG and B. KOK
Page 39 and 40: 72 in eonneetion witl th ff f h H T
Page 41 and 42: 77 Biochemistry. --- Tissues ot pri
Page 43 and 44: 80 coëxisting coacervates and the
Page 45 and 46: 84 85 GraflO~diorites: 86, 88, 97,
Page 47: 88 rare in the Netherlands East Ind
Page 51 and 52: II [I ,I Ij 92 2. Contact-metamorph
Page 53 and 54: 96 tuffs resembie components of the
Page 55 and 56: Zoology. - New observations on the
Page 57 and 58: 100 , into the lumen of the cel! as
Page 59 and 60: 104 6. De openingen in den celwand
Page 61 and 62: 108 voranging und von dem man vorau
Page 63 and 64: 113 Physics. - Les déformations pl
Page 65 and 66: 116 Trou rectangulaire (figure 10).
Page 67 and 68: 121 Geophysics. - Tapagraphy and Gr
Page 69 and 70: 124 conclusion. Still the mutual ag
Page 71 and 72: 125 derived by the writer from the
Page 73 and 74: 128 the order a 2 ; in that case th
Page 75 and 76: 132 in other words: any system of n
Page 77 and 78: 137 Mathematics. -- On the uniquene
Page 79 and 80: 140 und dies ist nul' dann nicht un
Page 81 and 82: 143 2. Other, 80 called "ring-porou
Page 83 and 84: 146 We have considered this case as
Page 85 and 86: 150 the addition of a small quantit
Page 87 and 88: 154 multiplied in order to bring it
Page 89 and 90: 158 REFERENCES. 1. N. KEMMER, Proc.
Page 91 and 92: or 162 4-2 w < (4- 1 / 2 (0 V2) Vl-
Page 93 and 94: 166 En considérant les domaines po
Page 95 and 96: 170 Traçons dans D deux demi-droit
Page 97 and 98: 174 175 Aus (3), (5) und (7) ergibt
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178 179 4. Si les IJ suites d'un sy
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182 la con dit ion moins exigeante
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186 Oder: K = ° ist die Gleicfwng
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190 In feite toch is de wortel niet
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194 war, und zwar eine solche, welc
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198 der tierischen Lautäusserungen
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202 TABLE. Original system --~--~--
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NEDERL. AKADEMIE VAN WETENSCHAPPEN
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210 came into contact with the musc
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214 is transformed and the humoral
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218 Theorem 2. Suppase that the kt
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222 definition of Da and T'Q (171.'
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226 back in the calorimeter, as soo
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230 surface concentration. The curv
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__ k 234 Finally, if we have to dea
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238 239 The stresses, caused by the
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242 · (3) Beweis: Nach der Landens
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246 Wählt man n = 4, so bekommt ma
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250 where i X is a unit vector norm
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254 The co variant vector QI' corre
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258 A/ors à tout nombre t > 2 au m
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262 on trouve ou V~I I a v - n+l X:
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266 3 Soit Cl un nombre positif fix
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270 where ro and Uo are certain con
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274 Solution of equation (7) fol' t
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------~--- ----------- 278 ERLENMEY
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282 problem, we have to pay more at
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2. Cytology. 286 Dependent up on th
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290 291 balance on the hindlegs by
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294 weIl as the rotation of the pel
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ahren 298 1hre . lautlichen . und s
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303 Comparative Physiology. - Das P
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306 Darminhaltes für Omnivoren urn
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310 we do not consider here) do not
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314 315 mêdian and in the parafasc
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319 ('1 \0 liî 1 1 ~ o ~ ~ 0 I~ ''
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323 Mathematics. - Zum freien Werde
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:326 Als Beispiele führen wir an:
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330 We may interprete (2) as fol!ow
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334 knNK are therefore in absolute
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338 shearing stress. The viscositie
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342 343 Again neglecting unessentia
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346 in which the coefficients h, i,
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351 Und: Mathematics. - Zar projekt
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355 11+1 2 L) I [,·1 -= .-.--.. ,,
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358 1l+1 2 J) I L\~ll) I -== ......
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362 Die durch die Enden a und iJ ge
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366 Wir sind jetzt imstande den Bew
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370 Hence the coefficients of .the
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375 Hence CANTOR's theorem can only
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378 Stellen we immers in I ft = jJ
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382 It will be obvious that th is g
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386 It is to be remarked that this
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390 Moreover curves ab and cd have
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394 in a basin of water '(C). the t
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398 399 One would be inclined to at
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-~-- 402 trade. Elsewhere - on the
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406 Effect of NaCI on the coacervat
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410 411 ot the transverse diameter
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415 414 545.587,624.669. 30. KNAUER
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418 419 struieren, so bietet sich u
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422 stellen. Mag diesel' Mensch sei
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426 der Dispersion (heiss oder kalt
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431 The audiogram in diseases or th
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434 epithelium extends upon the tym
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439 Applied Mechanics, - On a speci
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442 5 1 - (7,8) or to 5 2 - (7,8).
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446 of nuclei in the region of the
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1 Putting sin/: = Vz: we get 450 45
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454 Putting N =!'J and omitting the
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and 458 Consequently the solution o
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462 the action of a stress function
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Oder: 466 C~3 C~5 + C~4 C;3 + c;s C
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470 Wenn (12 m 2 x) = ° ist, haben
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474 475 on a La somme entre les acc
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478 A, Supposons d' abord r:2: n +
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482 Es sei nun irgend eine Strecken
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x J'Ie-m-~ (a) a e + mH sin a da =
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~. Biochemistry. - Factors determin
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.. 494 the coacervate volume with K
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499 Biochemistry. - Behaviour ot mi
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502 TABLE I. Addition of salt to 25
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507 Medicine. - The demonstration o
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510 examination in a numbec ot pati
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