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lower

1. Maths (of a limit or bound) less than or equal to one or more numbers or variables
2. Geology denoting the early part or division of a period, system, formation, etc.
References in periodicals archive ?
Alternation of pure micritic carbonates, very poor in benthic fauna, with marlstones and bioclastic limestones, rich in shelly fauna, suggests that the medium-scale mesocyclicity in the uppermost Ordovician and lowermost Silurian of Estonia was not directly controlled by water depth and facies oscillation due do sea-level variations, but was probably conditioned by a cyclic change of certain bio-geochemical conditions.
1D Member of the Delorme Group in the Avalanche Lake sections, Mackenzie Mountains, Cape Phillips Formation, Homerian, on Baillie-Hamilton Island, the uppermost Wenlock or lowermost Ludlow, Prince of Wales Island, Northern Canada; Bed 10, upper Wenlock, Ringerike, Norway; upper Voron'ya Beds, upper Wenlock Mikhajlovsk Pond area, Central Urals, Russia; lower part of the Ust'-Spokojnaya Formation, Wenlock, Matusevich River section, October Revolution Island, Severnaya Zemlya, Russia; middle Elton Formation, lower Gorstian, lower Ludlow of Welsh Borderland, southern Britain.
In the lowermost part of the formation one or two discontinuity surfaces occur in the Dekshino-328 and Hino-452 core sections.
The lowermost layers of ice melt when they come in contact with the lake, liberating trapped gases and bits of crushed-up rock.
Plus, given the fact that the drillhole targeted a distinct sulfide zone 300 feet down dip of the lowermost mineralization encountered in the underground workings, this intercept significantly increases the potential of our South Mountain Mine Project.
So far only the Cambrian, Ordovician, and lowermost Silurian strata of the correlation scheme and the geological map presented in this paper (Figs 5-7, Table 1) have been discussed in detail (Flod6n et al.
Unless otherwise stated, weighted average intercepts are calculated between the uppermost and lowermost samples within the main mineralised zone using a 0.
The sensor gauges two crucial pollutants, carbon monoxide and methane, in the lowermost atmosphere.