TY - RPRT TI - Geochemistry and jasper beds from the Ordovician Løkken ophiolite, Norway: origin of proximal and distal siliceous exhalites AU - Tor Grenne AU - John F. Slack PY - 2005 DO - 10.2113/100.8.1511 UR - https://pubs.usgs.gov/publication/70027921 ID - 70027921 ER -