<正>Columbia(Nuna)is a Paleo-Mesoproterozoic supercontinent that was assembled during global 2.0–1.8Ga collisional events,underwent long-lived,subductionrelate
<正>The Earth’s lower mantle structure,as revealed by seismic tomography studies,is best characterized by two large low seismic velocity provinces(i.e.,LLSVP)b
<正>Great earthquakes in mountain areas always trigger severe geologic hazards such as landslides,debris flows and rock falls,thereby causing tremendous propert