DOI: 10.1306/10231414089
Scopus记录号: 2-s2.0-84930078835
论文题名: Multi-scale three-dimensional distribution of fracture- and igneous intrusion-controlled hydrothermal dolomite from digital outcrop model, Latemar platform, dolomites, northern Italy
作者: Jacquemyn C. ; Huysmans M. ; Hunt D. ; Casini G. ; Swennen R.
刊名: AAPG Bulletin
ISSN: 0149-1465
EISSN: 1558-9195
出版年: 2015
发表日期: 2015
卷: 99, 期: 5 起始页码: 957
结束页码: 984
语种: 英语
Scopus关键词: Anisotropy
; Fracture
; Hydraulic structures
; Levees
; Lithology
; Optical radar
; Stratigraphy
; Carbonate reservoir
; Geometrical informations
; Hydrocarbon exploration
; Light detection and ranging
; Principal directions
; Quantitative approach
; Spatial variations
; Vertical variation
; Geometry
; digitization
; dolomite
; fracture zone
; hydrocarbon exploration
; hydrothermal deposit
; igneous intrusion
; lidar
; lithology
; spatial variation
; three-dimensional modeling
; variogram
; Italy
; Latemar Platform
; Trentino-Alto Adige
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: In recent years, fracture-controlled (hydrothermal) dolomitization in association with igneous activity has gained interest in hydrocarbon exploration. The geometry and distribution of dolomite bodies in this setting are of major importance for these new plays. The Latemar platform presents a spectacularly exposed outcrop analogue for carbonate reservoirs affected by igneous activity and dolomitization. Light detection and ranging (LIDAR) scanning and digital outcrop models (DOMs) of outcrops offer a great opportunity to derive geometrical information. Only a few analysis methods exist to quantitatively assess huge amounts of georeferenced three-dimensional lithology data. This study presents a novel quantitative approach to describe three-dimensional spatial variation of lithology derived from DOMs. This approach is applied to the Latemar platform to determine dolomite body geometry and distribution in relation to crosscutting dikes. A high-resolution photorealistic DOM of the Latemar platform allows description of dolomite occurrences in three dimensions, with high precision at platform scale. This results in a unique lithology dataset of limestone, dolomite, and dike positions. This dataset is analyzed by true three-dimensional variography for the geospatial description of dolomite distribution. In most studies, three-dimensional geostatistics is the combination of two-dimensional horizontal and one-dimensional vertical variation. In this study, the dolomite occurrences are extensive in three dimensions and cannot be reduced to a two-dimensional + one-dimensional case. Therefore, the concept of two-dimensional variogram maps is expanded to a three-dimensional description of lithology variation. Three-dimensional anisotropy detection is used to derive principal directions in the occurrence of dolomite. Two small-scale (<200 m [656 ft]) anisotropy directions emerge, one vertical and one subhorizontal, which describe the geometry of the dolomite bodies. These principal directions are perfectly aligned parallel to the average dike orientation. On platform scale (200-1600 m [656-5249 ft]) a bedding-parallel anisotropy direction indicates stratigraphic control on dolomite occurrences. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930078835&doi=10.1306%2f10231414089&partnerID=40&md5=aefa1a5aca92294ac828fe140cd79728
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13036
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Jacquemyn C.,Huysmans M.,Hunt D.,et al. Multi-scale three-dimensional distribution of fracture- and igneous intrusion-controlled hydrothermal dolomite from digital outcrop model, Latemar platform, dolomites, northern Italy[J]. AAPG Bulletin,2015-01-01,99(5)