1 Ocak 2019 Dergi makalesi Açık Erişim

Bozkaya, Omer; Bozkaya, Gulcan; Yilmaz, Huseyin; Hozatlioglu, Deniz; Banks, David A.

MARC21 XML

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nam##2200000uu#4500</leader>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">The origin, age and duration of hydrothermal alteration associated with iron skarn mineralization determined from clay/phyllosilicate minerals, Bizmisen-Erzincan, East-Central Turkey</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="4">
    <subfield code="p">ORE GEOLOGY REVIEWS</subfield>
    <subfield code="v">115</subfield>
  </datafield>
  <controlfield tag="001">70965</controlfield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-tubitak-destekli-proje-yayinlari</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">The Bizmilen skarn-type iron deposit is one of the major operating mines in east-central Turkey. Middle Eocene (46.3-42.0 Ma) plutonic rocks (quartz diorite) were intruded into Triassic-Cretaceous limestones and Upper Cretaceous ophiolites forming skarns (garnet, diopside, epidote, scapolite and tremolite), iron mineralization and clay-bearing alteration zones (argillic alteration). Clay-rich rocks of the argillic zone, contain mainly quartz, calcite, dolomite, feldspar and clay/phyllosilicate minerals comprising dioctahedral smectite, kaolinite, mixedlayered illite-smectite (I-S) and illite, and trioctahedral vermiculite, serpentine/chrysotile, talc, chlorite and mixed-layered chlorite-smectite (C-S). Na-Ca smectite, I-S, illite and kaolinite are developed at both the quartz diorite-limestone contact and within the quartz diorite body. However, phlogopite, vermiculite, serpentine/chrysotile, talc and chlorite occur at the quartz diorite-ophiolite contacts, indicating the distributions of clay/phyllosilicate minerals are influenced primarily by the host-rock composition. Chlorite geothermometry data suggest similar to 300 degrees C for the retrograde stage of skarn formation and similar to 120 degrees C for the late argillic alteration overprint, and the formation of low-temperature clays (smectite, vermiculite, C-S) in areas of skarn formation. Kaolinite 1 M (one-layer monoclinic) and I-S (I-75-S-25, R1 ordering) are indicative of low-temperature ( &amp;lt; 200 degrees C) argillic alteration conditions. Optical and electron microscopy studies of kaolinite, smectite and I-S indicate a completely hydrothermal (neo-formation) origin, with the absence of any detrital input. The major and trace/REE wholerock analyses of clays show they have a composition between the analyses of quartz diorite and ophiolite rocks (i.e., serpentinite and serpentinized peridotite). However, the analyses are closest to those of the quartz diorite. The calculated delta O-18 and delta D values of fluids in equilibrium with the clays (using the average values of the fluid inclusion homogenization temperatures) indicate a pre-dominantly magmatic water source. Assuming the clayforming fluids originated from magmatic water, the delta 18O(V-SMOW) and delta DV-SMOW compositions indicate &amp;lt; 200 degrees C for smectite during the supergene or low-temperature argillic stage, but in excess of 200 degrees C for I-S and kaolinite during the hypogene or high-temperature argillic stage. Ar-40/Ar-39 age data of illite and I-S (37.5-25.5 Ma) indicate alteration started during the late Eocene, similar to 4 Ma after intrusion of the pluton at 42 Ma, and continued to the late Oligocene, with a duration of similar to 12 Ma. The age data imply a long period of cooling at depth, without exhumation, during epithermal alteration after the retrograde skarn stage. The data show that hydrothermal clays formed from magmatic fluids in a hydrothermal system that persisted well after the intrusion of the igneous body and are indicative of how long hydrothermal systems can persist in areas of mineralization.</subfield>
  </datafield>
  <datafield tag="650" ind1="1" ind2="7">
    <subfield code="2">opendefinition.org</subfield>
    <subfield code="a">cc-by</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Pamukkale Univ, Dept Geol Engn, TR-20070 Denizli, Turkey</subfield>
    <subfield code="a">Bozkaya, Gulcan</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Cumhuriyet Univ, Dept Geophys Engn, TR-58140 Sivas, Turkey</subfield>
    <subfield code="a">Yilmaz, Huseyin</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Cumhuriyet Univ, Dept Geol Engn, TR-58140 Sivas, Turkey</subfield>
    <subfield code="a">Hozatlioglu, Deniz</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Univ Leeds, Sch Earth &amp; Environm, Leeds LS2 9JT, W Yorkshire, England</subfield>
    <subfield code="a">Banks, David A.</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="b">article</subfield>
    <subfield code="a">publication</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="u">Pamukkale Univ, Dept Geol Engn, TR-20070 Denizli, Turkey</subfield>
    <subfield code="a">Bozkaya, Omer</subfield>
  </datafield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2019-01-01</subfield>
  </datafield>
  <controlfield tag="005">20210316032236.0</controlfield>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="o">oai:zenodo.org:70965</subfield>
    <subfield code="p">user-tubitak-destekli-proje-yayinlari</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="z">md5:c2cb0adf92361228f8995827f63a094c</subfield>
    <subfield code="s">289</subfield>
    <subfield code="u">https://aperta.ulakbim.gov.trrecord/70965/files/bib-faa1ba74-fafd-4db0-9958-5022f5fa5cf5.txt</subfield>
  </datafield>
  <datafield tag="540" ind1=" " ind2=" ">
    <subfield code="u">http://www.opendefinition.org/licenses/cc-by</subfield>
    <subfield code="a">Creative Commons Attribution</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.1016/j.oregeorev.2019.103179</subfield>
    <subfield code="2">doi</subfield>
  </datafield>
</record>