1. These appear to be pieces of carbonaceous asteroids.

2. The carbonaceous chondrites not only are weaker but also vary greatly in strength.

3. Comets and carbonaceous asteroids of the appropriate energy disrupt too high, whereas typical iron objects reach and crater the terrestrial surface.

4. Similarly, granting a carbonaceous object the strength of a stony asteroid would allow it to penetrate to comparable altitudes.

5. The very weak carbonaceous meteorites often fall as showers of tiny fragments with masses of grams.

6. The first is to have the carbonaceous meteorites derive directly from low-speed near-Earth asteroids that are extinct comet cores.

7. Therefore a carbonaceous asteroid, although unlikely, can not be ruled out as an explanation of the Tunguska event.

8. In deeper channels, black and highly carbonaceous muds eventually form to create anaerobic conditions.

9. There are minerals absorbing uranium: zeolite, montmorillonite, carbonaceous matter.

10. It ? ? s proved that high grade carbonaceous gold concentrate can be obtained by floatation.

11. Because some strata carbonaceous shale, the result of geophysical work was infected.

11.

12. Some Andalusite crystals have carbonaceous inclusions, arranged so that in cross - section they form a dark cross.

13. The complicated structures and various forms of carbonaceous mesophase make the raw materials and production process involved more complicated.

14. Coal is a rock composed principally of organic carbonaceous macerals and inorganic minerals.

15. Carbonaceous mesophase is an excellent precursor for carbon materials, especially those with high additional value.

16. The chemical compositions of the Ningqiang carbonaceous chondrite matrix and a dark rim are analysed with instrumental neutron activation method.

17. About 1 percent of all recovered meteorites are the very peculiar carbonaceous chondrite stones.

18. Much stronger are the type 2 meteors, with the physical strength of carbonaceous chondrite meteorites, which they also resemble chemically.

19. The solid residue left after baking the volatiles out of carbonaceous asteroid materials is of considerable interest in its own right.

20. Measurements of the resulting isotope ratios closely approximated those found in carbonaceous chondrite meteorites.

21. Phobos and Deimos are small, irregularly shaped bodies, generally similar to carbonaceous asteroids in color, reflectivity, and density.

22. The outer half of the belt is dominated by the C-type asteroids, very dark materials that closely resemble carbonaceous meteorites.

23. Carbon aerogels density and well - developcd nano - seale porous structure are a speeial class of carbonaceous non - crystalline materials.

24. During petroleum thermal conversion, asphaltene yields coke via the second liquid phase and the carbonaceous mesophase.

25. The microstructure and characteristics such as combustion and expansion of the carbonaceous materials - graphite, acid graphite.

26. Microdomain building theory made great progress in explaining the formation of carbonaceous mesophase, but the introduction of the non-existent stacking units of molecules is a defect of the theory.

27. The effect of different process . conditions on the porous carbonaceous adsorbents prepared by pyrolysis.

28. It is investigated that the mesoporous activated carbon used as catalyst support is fabricated from carbonaceous gel derived from petroleum asphalt.

29. This sandstone unit is commonly thick - bedded and massive, with silty and carbonaceous laminations.

30. BGBU theory was brought forward based on the former theories and can explain the formation process of carbonaceous mesophase very well.

31. Or the organic material will be transformed by heat into a non-hydrocarbon black carbonaceous material of no value.

32. This paper studied the sorption coefficient for Au(I) and Ag(I) in cyanide pulp of mudy and carbonaceous ores with GSR-resins and common anion exchange resin, and its influence factors.

33. The carbonaceous residue formed after evaporation and pyrolysis of a petroleum product.

34. Carbon black is special kind of carbonaceous material on microstructure, particle configuration and surface behavior.

35. The methanation of different carbonaceous phases under atmosphere of hydrogen and its utility in the purification of multi walled carbon nanotubes (MWCNTs) were studied.

36. Roasting or chlorination could deactivate carbonaceous materials to eliminate theirs effects on recovering gold.

37. A carbonaceous heat source composition for a non-combustion type smoking article according to the present invention includes carbon and 0.5 to 5% by weight of a polyhydric alcohol.

38. The carbonaceous porous body constituting the enzymatic electrode is preferably carbonaceous gel.

39. Thin layers of sandy shale,() and carbonaceous fragments are locally present.

40. The balance was carbonaceous fraction , the nonflammable inorganic fraction was negligible.

41. Carbonaceous chondrite planetesimals were adsorbed on the mantle surface of the primitive earth, forming primitive carbon-rich areas.

42. Coal is a sedimentary rock composed principally of organic carbonaceous macerals and inorganic minerals.

43. Part of char is used as final product in ferroalloy industries, the rest is treated with impurity removal and brought out the new carbonaceous reductants which applied in copper refining.

44. New 730E frother was used in the flotation tests of common oxidized copper ore, oxidized copper ore with high combination rate and carbonaceous slabby rock copper ore of Tangdan Copper Mine.

45. Some radiolarian fossils were discovered two times in the carbonaceous silicalites, the major gold-bearing rocks in the Changkeng gold-silver deposit.

46. But owing to the limit of the carbonaceous framework and difficulty of the raceme, so the derivatives of annulene show opticity activity.

47. A black, porous, carbonaceous material, 85 to 98 percent carbon, produced by the destructive distillation of wood and used as a fuel, filter, and absorbent.

48. Coal is a sedimentary rock composed principally of carbonaceous macerals and inorganic minerals.

49. The presence of water is unfavorable to the graphitization (ordering) of carbonaceous matter.

50. The lithophile elements in ordinary and carbonaceous chondrite groups may display either chalcophile or siderophile nature in enstatite chondrites.

51. In this paper, the carbonaceous matter in gold ores of Jinya GoldMine, Guangxi, China was studied .

52. The sediments are mudstone , shale, carbonaceous mudstone and marl of deep and semi - deep lake facies.

53. The carbon dioxide is the final oxidation product carbonaceous compound, which arosed the global greenhouse effect.

54. Gold mineralization of the zone is confined only to the Cambrian carbonaceous shale overlain by siliceous rocks, and apparently controlled by a premineral tough shear zone.

55. The feature of Muruntau-type gold deposits was which in the carbonaceous clastic rocks. and the ore was quartz stockwork and the stringer vein.