释义 |
tar sands in American English Geology sands or sandstone deposits containing tarry, viscous, bituminous oil Examples of 'tar sands' in a sentencetar sands Tar sands contain bitumen, sand, oil, water and clay.The high price of crude makes investment in tar sands economically viable.Its tar sands are known to hold 176 billion barrels.The division benefited from strong growth in its tar sands and mining services.Tar sands expansion has now driven them 26 per cent above.Extraction of tar sands oil is also hugely energy-intensive.But extracting oil from tar sands and increasing our reliance on ever more expensive sources of oil is more dangerous, economically, politically and environmentally.Energy extraction is also becoming more water-intensive as technological advances enable companies to extract fuel from resources such as tar sands and shale rock.For the past three years global 'all-oil' production has been 'flat', maintained so by the contribution of tar sands and other non-conventional oils. |