Buradasınız

Anasayfa » Content

Bitlis masifi Avnik (Bingöl) yöresindeki zengin demir yataklarının oluşumu

Genesis of the apatite-rich iron ore deposits, Avnik (Bingöl) region, Bitlis massif, Turkey

Journal Name:

  • Jeoloji Mühendisliği Dergisi

Publication Year:

  • 1984
Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In the Avmlk aıea, apattte-rlch iron mm are toterbedl^d wîtti basic to İ&lfAe calo-alkaMne metmolmnâm (ca, 4Ä OMa) showing some well-preserved parphyritiô* spheruUttc and voîoaıüelastie texture», They ar« intrudM by the Avnik and YaylÉ* graMttAï (ca. SÄO Ma). The toon ores and associated metavolcoiiù's and granitoids are utioonfornmbly overlain by ntieaschtets and Permian marbles, which were folded and metamorphosed during the Alpine orogeny. The won ore bodies are banded, massive or âï»m mtoated M form and me located along the gmdatfional contact zone between the gneisses and the better-pre »rved parts of the metavoleanic sequenee. The vmmU ve lonsdkkil oi^ zones ar© teaninated, 1-» millimeters to a few eenttmeters, and the banded ore zones show magnetite-apatite lamination». The dissemtoated iron ot€» are re^onally widespread in til© metovolcaniçs, but usually are coneent^teâ adjecent to the massive ore zones. Magnetite, apatite and acttnolite are the dominant minerals to all t y ^ s of depteit; accessory phases to lude feldspar» quartz, mÊm, diopside, hornblende, eroiàte and sphene, OMorite, tale, epMote, aHanite, eaMte, hematite, Mmenite and mtile are low- T retrograde minerals. Surface and near surface, magnetite eoneentmttons are always w t t e â The final stage of alteration con»tet§ of a general toasformatton into gTOthite. Fluo^pattte was partly altered to hydroxy-fluorapattte and hyroxyapattte. The apatite-rich iron ares were initially formedj in a volcanic environment and it i* concluded that the ores formed from Immiscible Mquids which se^mted from magmas that underwent strong fraettonation, BEE data on coexisting apatite ana magnetite and on the associated metevoicamtes support this conclusion. Where the apattte-rfeh iron ores were intrudedby the AvMk granitoid, they were remobiiîzeâ to from »toekwork type veiiis of large magnetite, apatite and aotiaiolite crystals,
Bookmark/Search this post with
Abstract (Original Language): 
Avnik bölgesinde, apatitçe zengin demir cevherleri, yergel olarak iyi korunmuş porfWtik, sferulitik ve volkaniklastik dokular gösteren bazikten felsife kadar defişen kalk=alkâMn metavölkanitlerle (450 Ma) ara katmanlıdır. Demir cevherleri ve metevolkanltler Avnik ve Yayla granitoidleriyle (350 Ma) kesilirler, Demir cevherleri ile birlikte bulunan metavolkanitler ve gıaaitoidler üzerine, Alpin orojenezi sırasında kıvrımkınınış ve metamorfise olmuş mikafistler ve Permiyen mermerleri uyumsuzlukla oturur. Demir cevherleri bantlı, maaiv ve saçılmış türden olup gnays ve istifteki daha iyi korunmuş metavolkaditlerin dereceli geçiş dokanafmda yerleşmiştir, Maısiv meroeksel cevher zonları 1=2 mnVden birkaç santimetreye kadar defişen laminalanma gösterir. Bantlı cevher zonları magnetît-apatil laminalan içerir. Saçılmış cevher zonları, bölgesel olarak, metavolkanitler içinde yaygın olmasına karşın, genellikle ma= siv cevher zonları çevresinde yoğunla§mi|tıre Bütün yatak tiplerinde magnetit, apatit ve aktiaolit egemen minerallerdir; feldispat, kuvars, mika, dlopsit, hornblônd, krossit ve stfen ataesuvar minerallerdir, Klorit, talk, epidot, lallanlt, kalsit, hematit, ilmenit ve rutil düşük sıcaklık retrograd minerallerdir, Ytteey ve yüzeye yakın yerlerde magnetit oluşukları sürekli olarak martitlepnislerdir. Ayrışmanın son evresi genellikle götite <3Önü§üm §eklmdedir, Fluorapatit kısmen hidrcfcsâl-fluorapatit ve hidrokslapatite ayrışmıştır, Apatitçe zengin demir cevherleri başlangıçta volkanik ortamda olupnuş olup yüksek düzeyde bölümaelleşme geçiren magmadan ayrılan kanfmayan sıvılardan oluştufu sonucuna vanlmıştır. Birlikte bulunan apatit ve magnetit ile bunlarla ara katmanlı olan metavolkanitlerin RE© verileri de bu sonucu destekler, Apatitçe zengin demir cevherleri Avnik granitoîdiğle kesildiği yerlerde, remobülze olarak büyük magnetit, apatit ve aMinolit kristalleri içeren af sı türde cevher damarları oluşturur.
FULL TEXT (PDF): 
PDF icon arastirmax-bitlis-masifi-avnik-bingol-yoresindeki-zengin-demir-yataklarinin-olusumu.pdf
33-51
  • Turkish

REFERENCES

References: 

ALTINLJ, I.E., 1966» Oeoloşy of eastern and south
eastern Anatolia, Part n: Turkey Mineral
Research and Explor, Inst, Bull,, 6T, 1=22,
ARVAOTrmiS, N., ve RICKARD, Dé, 1981, REE -
(geochemistry of an early Proterozoie volcanic
ore district, Dammberg, central Sweden, a
summary of results: Annual Report of the
Ore Research group, Stockholm University,
AYKULU, A., ve EVANS, A,M,f 1974, Structures In the
Iranides of southeastern Turkey: Qeol, Rundschau,
63, 292.305.
BRUNFELT» A,O4i ve RÖEX4ANDTS, Ii f 1974» Determination
of rare earttis and thorium in apatites
by thermal and epithermal neutron - activation
analysis; Talanta, 21, 513-521,
BUDDINOTON, A.F., ve UNDSUBY, D.H., 1964, Iron
. titanium oxide minerals and synthetic
equivalents: Jour, Petrology, 5, 310-357,
DOSTAL., J,f ZEUlttiL,!, M.# CABLLES, J.O, , ve
CLARK A.H., 1977, Geochemistry and origin
of volcanic rocks of the Andes (26°.28°S),
Contrito. Mineral. Petrol, 0», 113-128.
ERDOĞAN, B.f 1982, Bitlis Masifinin Avnik (Bingöl)
yöresinde jeolojisi ve yapısal özellikleri: Ege
Ünlv,, Yerbilimleri Fak,, femir, yayınlanmamıg
doçentlik tezi, 108 s, v
ERDOĞAN, B.} HELVACI, C, ve DORA, O.Ö., 1981,
Avnik. Bingöl yöresi apatitli demir yataklarının
jeolojisi ve oluşumu: Kesin rapor, Yerbilimleri
Fak., Ege Üniv,, î-smir, 121 s.
FLEISCHER, M., 1983, Distribution of the ianthanidês
and yttrium in apatites from iron ores and
its bearing on the genesis of ores of the Kiruna
type: E0ÖN, GEOL., 78, 1007-1010.
FRUTOS, J,J„ ve ÖYARZUN, J.M. 1975, Tectonic and
geochemieal evidence concerning the genesis
of El Laco magnetite lava flow deposits, Chi=
le: EGON. GEOL,, 70, 988-990.
FRYER, B,J„ 1977a, Rare earth evidence in iron - formations
for changing Freeambrian oxidation
states: Geochim, Cosmochim, Acta, 41, 361=
367.
FRYER, B4J,f 1977b, trace element geochemistry of
the Sokoman iron formation! : Can. J, Earth
Sei,, 14, 1598-1610,
GRAF, ji#Ltf 1977, Rare earth elements as hydrother=
mal tracers during the formation of massive
sulfide deposits in volcanic rocks: BOON,
GBÖL, 72, 527-548,
GRAF, J,L„ 1978, Rare earth elements, iron formations
and sea water: Geochim. Cosmochim. Acta,
42, 1845=1850,
GORDON, E.G., HANDLE, K,, GOLES, G.G,, CORLISS,
JeB„ BEENSON, M.H, ve OXLEY, S.S., 1968,
Instrumental activation analysis of standard
rocks with high . resolution ö-ray detectors:
Geochim, Cosmochim, Acta, 32, 369-896,
GÖNCÜOOliU, M.C., TURHAN, N,, 1983, New results
on the age of Bitlis metamorphlcs: Turkey
Mineral Research and Explor. Inst, Bull,, 95/
96, 1-5.
HALL, R,, 1976, Ophiolite emplacement and the evolution
of the Taurus suture zone southeastern
Turkey: Geol, Soc, Amer, Bull, 87, 1078-1088,
HALL, R„ ve MASON, Ri? 1072, A tectonic melange
from the Eastern Taurus Mountains, Turkey:
Geol, Sec, London Jour,, 128, 395.398.
HASKIN, L,A^ HASKm, M,A„ FREY, F.A, ve WIL=
BEMALT T.E., 1968, Relative and absolute
terrestrial abundances of the rare earths. In
L,H, Ahrens (Editor), Origin and Distribution
of the Elements; In Ser, Monogr, Earth Sei,,
30, 889-912,
HELVACI, C„ ve GRIFFIN, W,L„ 1983a, Rb.Sr ge-
Oührottolögy of the Bitlis Massif, Avnik (Bin»
göl) area, S,E, Turkey: Geol, Soc, Load,, Jour,,
in press,
HELVACI, CL ve GRIFFEST, W.L., 1983b, Metamorp.
hie feldspathization of metavolcanies and granitoids,
Avnik area, Turkey: Contrib. Mineral,
Petrol,, üx press,
KETÎN, I., 1966, Tectonic units of Turkey: Turkey
Mineral Research and Explor, Inst, Bull,, 66,
23-34.
LAAJOKI, K.t 1975, Rare . earth elements in Precambrian
iron formations in Vayrylankyla,
South Puolanka area, Finland: BuU, Geol,
Soc, Finland, 47, 98-107.
LUNDBERG, B. ve SMEILLE, J,A.TO 1979, Painirova
and Mertainen iron ores: Two deposits of the
Kiruna iron ore type in Northern Sweden:
ECON, GEOL,, 70, 1131-1152,
MAYNARD, J.B., 1983. Geochemistry of sedimentary
ore deposits: Springer-Verlag, Berlin, 305 s,
MEL'NIK, Y.P., 1982, Precambrian banded » iron for=
mations: Elsevier Seien,Pub, Comp,, 316 s.
PARAK, T.. 1978, Rare earths in the apatite iron ores
of Lapland and some data about the Sr, Th
and U content of these ores: ECON. GEOL,,
68, 210-221.
PHILPOTTS, A,R„ 1967, Origüı of certain iron - ti*
tanium oxide apatite rocks: ECON. GEOL4,
62, 303*315.
ROELANDTS, I.f ve DUCHESNE, J,Cé, 1977, Rare -
earth elements in apatite from layered norites
and Iron - titanium oxide ore - bodies related
to anorthosites (Rogaland, S.W. Norway).
LèH, Ahrens (Editor), Origin and Distribution
of the Elements: Int. Ser4 Monogr Earth
Sei,, 199-212,
8MELLIE, J.A.T., 1980* Kiruna - type iron ores from
Mertainen and Fainirova; Geol. For, Stoekh.
FÖrh,, 102, 290-291,
WATSON, BA. 1976, Two . liquid partition coettlcents:
Experimental data and geochemical
Implications: Contrib, Mineral. Petrol,, 56,
119.184,
WATSON, 1B„ ve GREEN, T.H., 1981, Apatite/liquid
partition coefficient for the rare earth elements
ajid strontium: Earth Planet. Sei. Lett.,
56, 405-421,
YILMAZ, O„ 1971, Etude pétmgraphique et .géochronologique
de la région de Cacac: Published Ph.
D, thesis, Université Scientifique et Médicale
de Grenoble, France,
YOtJNG, E.J„ MYERS, A.T., MUNSON, E,L,, ve
CONKLÎN, N.M., 1969, Mineralogy and geochemistry
of fluorapatite from Cerro de Mer*
Prof, Paper, 650-D, 84-93,
cado, Durango, MeKico: U.S. Qeol, Survey

Thank you for copying data from http://www.arastirmax.com