31. To date, no one has been able to correlate the seismicity with particular geological structures or geophysical anomalies. 32. In geology, a fold is a common three-dimensional geological structure that is associated with strain deformation under stress. 33. Evidence supporting an impact origin includes the geological structure of the crater, and the discovery of shocked quartz. 34. The geological structure is composed of soft sediments which have weaker anti-erosion property and are vulnerable to wind. 35. The survey lasted only eighteen months but made significant contributions towards understanding the basic geological structure of the state. 36. The exploration of the underlying geological structure in his home country and dissemination of research results was his goal. 37. Other geological structures assumed positions around or on top of the Shield millions of years after it was formed. 38. Geological structure makes this region more susceptible to arsenic; in the United States, Western states register the highest concentrations.39. The Precambrian rocks atop North Franklin Mountain represent " the highest geological structure in the state of Texas ." 40. The geological structures and geomorphology of Iceland are strongly influenced by the spreading plate boundary and the Iceland hotspot.
