Oxygen deficient syndrome beneath the Super Continent : role of graphite in grobal carbon cycling

超级大陆下方的缺氧综合症：石墨在全球碳循环中的作用

基本信息

批准号：
15403016
负责人：
WADA Hideki
金额：
$ 9.41万
依托单位：
Shizuoka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

Graphite is a widespread and common accessory mineral in a variety of supracrustal rocks metamorphosed over a range of pressure temperature, and chemical inertness. On the other hand the precipitation of solid carbon (graphite) from natural carbon bearing fluids was reported such as those containing CO2,CO and/or CH4. We focused on the origin and carbon isotope of mantle related fluid inherited graphite deposits as a vein and magmatic types. During in 2003, we sueveyed the occurrence of graphite in Madagascar and at the first time found of new occurrence of incipient charnockitic rocks which is very similar to the typical incipient charnockite discovered in Southern India and Sri Lanka. These incipient charnockite were believed to be formed descication of metamorphism with highly dry(deficient of water) in India and Sri Lanka. In Madagascar, this occurrence of charnockitic rocks also informed the water deficient fluid presence which penetrated on the deep crustal rocks in the Gondwana … More supracrust. In 2004, we surveyed the graphite occurrences in Achancovil Shear Zone, south India where graphite occurrece of eclogitic rocks in gamet-spinel bearing gneiss and gave us the significant signature of mantle carbon in isotopes.We investigated during the project periods between 2003-2005 the occurrences of graphites in Madagascar, South Africa, Southern India, Ukraine, and Greece. We discovered the newly occurrence of graphites in highly metamorphosed crustal and mantle originated rocks. We also held an International symposium and field workshop on Gondwana evolution and dispersal in Kochi University collaborating with Profs.M.Santosh of Kochi Univesity and M.Arima of Yokohama National University. We organized the special sessions entitled the Fluids in the Gondwana Crust. Four special guest speakers invited from Sapin, Sri Lanka and Ukraine are presented the newly geochemical and gelogoical characteristics with the crustal evolution related with the occurrence of graphites in the Gondwana supercontinent. Less

石墨是在多种压力温度和化学惰性范围内变质的各种肩trap骨上的宽度和常见辅助矿物。另一方面，据报道，天然碳轴承流体的固体碳（Graphicite）的沉淀，例如含有CO2，CO和/或CH4的固体碳（Graphicite）。我们专注于地幔相关流体的起源和碳同位素遗传的石墨沉积物作为静脉和岩浆类型。在2003年，我们起诉了马达加斯加石墨的发生，并在首次发现了初期的新出现的夏诺克岩岩石，这与在印度南部和斯里兰卡发现的典型初期的夏诺米非常相似。据信，这些初期的夏诺基是在印度和斯里兰卡高度干燥（水缺乏）的变质降落的。在马达加斯加，这种夏诺氏岩石的发生还告知水分不足的液体存在，该存在渗透到冈瓦纳（Gondwana）的深层岩石上……更加震撼。 In 2004, we surveyed the graphite occurrences in Achancovil Shear Zone, south India where graphite occurrences of eclogistic rocks in gamet-spinel bearing gneiss and gave us the significant signature of mantle carbon in isotopes.We investigated during the project periods between 2003-2005 the occurrences of graphite in Madagascar, South Africa, Southern India, Ukraine, and Greece.我们发现了高度变质的地壳和地幔起源岩石中新事物的新出现。我们还举办了关于高知大学冈瓦纳进化和散布的国际研讨会和现场研讨会，并与高知大学的M.Santosh和横滨国立大学的M.Arima合作。我们组织了题为冈瓦纳地壳中的流体的特殊会议。来自Sapin，Sri Lanka和Ukraine邀请的四名特别嘉宾演讲者被介绍了新的地球化学和地质特征，其地壳演化与Gondwana超大陆中石墨的发生有关。较少的