Abstract
New techniques using Computer Controlled Scanning Electron Microscopy (CCSEM) and Laser Ablation – Inductively Coupled Plasma – Mass Spectroscopy (LA-ICP-MS) have recently been developed at the Geological Survey of Denmark and Greenland (GEUS) to determine source, compositional variation and sedimentary pathways of sandstones. These new time- and cost-efficient methods are highly applicable in petroleum and mineral exploration. This paper illustrates how the provenance and variability of Miocene titanium-rich sands in western and central Jylland have been investigated, but the methods are presently also used offshore the Faroe Islands and in East and West Greenland. CCSEM and LA-ICP-MS utilise simple sample preparation methods, are relatively rapid and less expensive than conventional methods and yield more information.
Highlights
New techniques using Computer Controlled Scanning Electron Microscopy (CCSEM) and Laser Ablation – Inductively Coupled Plasma – Mass Spectroscopy (LA-ICP-MS) have recently been developed at the Geological Survey of Denmark and Greenland (GEUS) to determine source, compositional variation and sedimentary pathways of sandstones
As part of a provenance study of ilmenite-rich sands occurring in the Miocene of western Denmark carried out at GEUS, it was the aim to develop a more cost-efficient standard analytical tool that could integrate bulk rock chemostratigraphic data, mineral compositional data and age information
This study describes the use of CCSEM and LA-ICP-MS as alternative techniques, capable of providing detailed information relevant to sand provenance more rapidly and less expensively than conventional methods
Summary
The coastline of the proto-North Sea had a NW–SE trend across central Jylland during the Miocene (Fig. 1). A distinct change to a more westerly transport direction occur-
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