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Calculation of Fallout Tephra Volumes in Sihai Phase of Jinlongdingzi Volcano of Longgang Volcanic Swarm in Jilin Province(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2006年第01期
Page:
28-31
Research Field:
Publishing date:

Info

Title:
Calculation of Fallout Tephra Volumes in Sihai Phase of Jinlongdingzi Volcano of Longgang Volcanic Swarm in Jilin Province
Author(s):
LI Zhi1; HAN Song2; DENG Ya-ping3; ZHANG Ye4; YU Fu-sheng5
1. Second Institute of Geological Survey, Gansu Bureau of Geology and Minerals, Lanzhou 730000, Gansu, China; 2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China; 3. Institute of Exploration and Development of Huabei Oil Field, Renqiu 062552, Hebei, China; 4. Institute of Geological Survey of Gansu Province, Lanzhou 730000, Gansu, China; 5. School of Resource and Information, Petroleum University, Beijing 102249, China
Keywords:
Longgang Mountain;  Jinlongdingzi Volcano;  fallout tephra;  volume calculation;  Jilin Province
PACS:
P588.14
DOI:
-
Abstract:
Three methods, the trapezoidal rule, the straight lines on log-log plots of area versus thickness and the straight lines on plots of log thickness versus square root of area, of calculating volumes of fallout tephra deposited in Si- hai Phase of Jinlongdingzi Volcano of Longgang Volcanic Swarm in Jilin Province are applied in this paper. The calculated results are 0.096 km3,0.138 km3 and 0.1095 km3 respectively. Contrasting with the result(0.105 km3)of volcalic eruption program by Los Alamos National Laboratory, the last method is considered the best calculation, and the problems of the other two methods are discussed. The method using straight lines on plots of log thickness versus square root of area is rec- ognized to be relatively reasonable because volcanic deposits decrease exponentially with distance from volcano center.

References:

[1] 欧祥 喜. 龙岗 火山 群的 形成 与构 造的 关 系[J] . 吉 林 地质， 1984，3(1):76 81.
[2] 刘 祥，张成梁. 龙岗火山群四海期火山渣层 ———来自金龙顶 子火山亚普林尼式火山喷发[J] . 吉林地质 ,1997 ,16(3):1 8.
[3] 吉林省地 矿局. 靖宇县幅(1 ∶20 万)区调报告[R] . 长春 :吉 林省地矿局，1979 :101 116.
[4] 王彦生，靳 克. 吉林省 新生代龙 岗火山群 期次划分 及火山 喷发类型特点[J] . 地质论评，1999，45(增刊):332 337.
[5] 刘 祥，向天 元，王锡 魁. 长 白山 地区 新生代 火山 活动 分期 [J] . 吉林地质，1989，8(1):30 41.
[6] 樊 棋诚，刘若新，魏 海全，等. 龙岗 金龙顶子近代活 动火山的 岩石学与地球化学[J] . 岩石学报，1999，15(4):584 589.
[7] 史兰斌，林传勇，韩秀伶. 吉林龙岗火山群金龙顶 子火山喷发 物中幔源包体 的 基 本 特 征 及 其 地 质 意义 [J] . 地 质 论 评， 1999，45(增刊):308 317.
[8] Froggat t P C. Review of Methods of Estimating Rhyolitic Tephra Volumes :Applications to the Taupo Volcanic Zone New Zealand[ J] . J Volcanol Geotherm Res，1982，14 :301 318.
[9] Rose WI Jr，Boni s S，St oiber RE，et al. S tudies of Volcanic Ash f rom Tw o Recent C ent ra Ameri can Erupt ions[J] . Bu ll Volcanol，1973，37 :338 364.
[10] Pyle D M. The Thick ness，Volume and G rain S ize of T eph ra Fall Deposit s[J] . Bull Volcan ol，1989，51 :1 15.
[11] Judy Fierst ein，Manuel. Anoth er Look at th e Cal culati on of Fallout T eph ra Volumes [J] . Bu ll Volcanol，1992，54 : 156 167.

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Last Update: 2006-03-20