natural bitumen

natural bitumen

[′nach·rəl bə′tü·mən]
(geology)
Native mineral pitch, tar, or asphalt.
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References in periodicals archive ?
Even though there still are natural bitumen deposits, in Trinidad for example, Europe almost exclusively processes bitumen manufactured industrially in refineries.
The topics include characterizing and evaluating the Petrocedeno Field, Early Miocene Oficina Formation, Orinoco Heavy Oil Belt, Venezuela; a regional geologic framework for the Athabasca oil sands in northwestern Alberta, oil-saturated Mississippian-Pennsylvanian sandstones of south-central Kentucky; an overview of natural bitumen fields of the Siberian Platform, Olenek Uplift in eastern Siberia; spectral decomposition in a heavy oil and bitumen sand reservoir; screening criteria and technology sequencing for in situ viscous oil production; and tailings management and water use in surface-mined oil sands.
Export and import of natural bitumen and asphalt: volume, structure, dynamics
Rustam Minnikhanov called this subject very relevant: "Today there is a lot of talk about new technologies and new types of raw materials, and we have to use our competitive advantage in the form of large resources of natural bitumen.
Table 19: Natural Bitumen and Asphalt; Asphaltites and
OBJECTIVES: We investigated the possibility that PAHs from natural bitumen compromised the health of the prehistoric Chumash Indians in California.
Sizeable quantities of extra-heavy oil and natural bitumen - estimated at 2.
Despite this immense resource base, heavy oil and natural bitumen accounted for only 3 billion of the 25 billion barrels of crude oil produced by the beginning of this millennium.
The authors identify natural bitumen on stone implements dating to 70 000 BP.
The presence of water improves the combustion characteristics of the natural bitumen.
The landmark operators applied ELMS[R] Natural Bitumen Jacket[TM] (NBJ), manufactured by Green Products LLC, Romeoville, Ill.