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magma造句
1. The blazing magma was surging by us. 2. With the temprature cool, magma would be hardened into rock. 3. The whole town was swallowed up by the magma. 4. Different minerals in the magma create different structures. 5. Instead it slowly froze in a magma chamber into a mush of coarse crystals. 6. Pastures of fresh magma flows known as pillow lavas and the rubble of frequent earthquakes line the floor of this stone trough. 7. The temperature range covers typical values expected in magma chambers. 8. This meant that the magma that fed the fissures of the second phase was almost completely de-gassed, hence its quiet emission. 9. Magma can wedge open and penetrate cracks cutting across the layering of the surrounding rock, forming tabular intrusions called dikes. 10. A single deep connection to the magma supply maintains the heat input by convection. 11. As discussed in the Magma Metals story in Chapter Seven, that demands much more than initial feelings of respect and promises. 12. Volcanicity and magma emplacement, largely in the form of large granite intrusions, characterize the volcanic arc. 13. These can be related to rates of magma production versus differentiation by crystal fractionation within crustal magma chambers. 14. We envisage a convecting magma chamber of height H, cooled from above. 15. The magma would then cool and harden, adding to the four-mile-thick slab of moving crust. 16. Igneous intrusions injected as a mobile magma may show sharp contacts with surrounding, or country, rocks. 17. Hot magma from the mantle would rise to the surface to fill in the crack. 18. Hot magma bubbled up through the older parts of Laurentia west of Hudson Bay, signaling the start of continental rifting. 19. As the magma rises towards the surface the confining pressure drops and gas bubbles begin to form and move upwards. 20. Its purpose is to gather sufficient information to answer questions about magma chambers in oceanic crust. 21. Central vent and fissure eruptions represent the two basic ways in which magma can reach the surface. 22. In the process, their commitment to one another and to their vision for Magma grew more profound. 23. But from 1992 until today a critical mass of the people and teams at Magma Metals have delivered unprecedented performance and change. 24. They are a sign, Hoffman believes, of the hot pancake of magma that was warping the crust from underneath. 25. The mechanism allows for great variation and complexity in magma chamber sedimentation. 26. For the next 300 million years, the outpouring of magma built toward a crescendo. 27. Because the shares tendered were below 90 % of all outstanding shares, the acquisition must be approved by Magma shareholders. 28. The shares have climbed 4. 7 % since the proposed Magma acquisition was announced. 29. The south-southeast-trending increase is most probably the result of a shallow magma intrusion. 30. To begin, he formed a council that would act like a board of directors for Magma Metals.