basal conglomerate

basal conglomerate

[′bā·səl kən′gläm·ə·rət]
(geology)
A coarse gravelly sandstone or conglomerate forming the lowest member of a series of related strata which lie unconformably on older rocks; records the encroachment of the seabeach on dry land.
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This basal conglomerate quartz mica schist and quartzite-siltstone sequence is over 600 m thick and is overlain by a ~30 m thick cherty dolomite sequence.
The 2010 exploration programs are underway and are aimed at further testing and significantly expanding the current resources, as well drilling a large iron-rich basal conglomerate for the first time.
In the old Rio Algom drill logs, there was only a suggestion of this new Basal Conglomerate Bed and the potentially higher grades, but nothing close to the type of grades they're now seeing, said Shefsky.
The quartz conglomerate unit deserves further study since it resembles the Chequilla Conglomerate, or even the basal conglomerate of Provence and Sardinia.
Falcon was awarded a production license covering 245,775 net acres and an independent report, effective March 31, 2008, estimates potentially 42 trillion cubic feet of recoverable contingent resources for Falcon's interests in the Szolnok formation, the Lower Endrod, the Basal Conglomerate and the Synrift Sequence, and 98 million of barrels oil in the Upper Endrod formation.
Diamond drilling at the recently discovered Cobble Zone (news release dated July 11, 2016) is scheduled to start in the second half of October and will test the extent of gold mineralization in both the stacked and basal conglomerate units in that area.
Shefsky is very bullish about the their high-grade findings in a basal conglomerate bed 15 metres below a main conglomerate bed (sedimentary rock of pebbles solidified into solid rock).
Most probably, early diagenetic conditions were similar to the lithification stage of the basal conglomerate pebbles of the Upper Cambrian Kallavere Formation in the Pakri Peninsula (Nemliher & Puura 1996a).
The Browns Park Formation is divided into two distinct lithologies: a basal conglomerate member and overlying sandstone member, each of which host uranium deposits.
All of the drillholes were pre-collared using a non-coring large diameter drilling rig to penetrate to the basal conglomerate layer of the younger Tertiary-age cover rocks which unconformably overlie the much older Paleozoic rocks.