The tectono-stratigraphic and magmatic evolution of conjugate rifted margins: Insights from the NW South China Sea

This study is based on a careful analysis of high-quality reflection seismic sections located at the tip NW South China Sea V-shaped rift basin. Using CGN-1 section, line imaging complete sedimentary and magmatic architecture conjugate rifted margins, we: (1) provide detailed description crustal architecture; (2) define extensional domains, which we relate to specific deformation phases; (3) determine tectono-stratigraphic evolution linked rifting. Based these, propose kinematic restoration quantify amounts extension associated strain rates. We discuss link between record illustrate it in Wheeler Diagram. Relying identification characterization distinct stratal patterns architectures, qualitative quantitative criteria interpret two critical events that are necking hyperextension. These individualization subsequent dismembering so-called keystone, here referred as H-block. It first time such an approach used decipher syn-rift mega-sequence across present-day margins. differs from previous interpretations correlative surfaces distinction between: different types top basement; syn- post-tectonic packages within record. leads new has potential be analyze, correlate recorded