在有关模式和产地标本研究的基础上,依据Wen & Frodin对该属植物的处理方式,对中国梁王茶属Metapanax Frodin ex J. Wen & Frodin (=Nothopanax Miq.)植物的原有两个变种贡山梁王茶(Nothopanax davidii (Franch.) Harms ex Diel...在有关模式和产地标本研究的基础上,依据Wen & Frodin对该属植物的处理方式,对中国梁王茶属Metapanax Frodin ex J. Wen & Frodin (=Nothopanax Miq.)植物的原有两个变种贡山梁王茶(Nothopanax davidii (Franch.) Harms ex Diels var.gongshangensis Shang)、尾叶梁王茶(Nothopanax delavayi (Franch.) Harms ex Diels var.longicaudatus Feng)进行了分类学修订.结果将Nothopanax davidii (Franch.) Harms ex Diels var.gongshangensis Shang归入异叶梁王茶Metapanax davidii (Franch.) Frodin ex J. Wen & Frodin (=Nothopanax davidii (Franch.) Harms ex Diels)做为该种的新异名;并将尾叶梁王茶Nothopanax delavayi (Franch.) Harms ex Diels var.longicaudatus Feng 移入Metapanax属下,命名为Metapanax delavayi (Franch.) Frodin ex J. Wen & Frodin var.longicaudatus(Feng) R. Li & H. Li;此外,对国内有关专著中梁王茶属植物的学名作了相应的订正.展开更多
A new approach was taken to investigate the crustal stucture of the Kane transform and its aseismic extension, using high quality bathymetry and gravity data. The gravity signatures associated with variations in crust...A new approach was taken to investigate the crustal stucture of the Kane transform and its aseismic extension, using high quality bathymetry and gravity data. The gravity signatures associated with variations in crustal thickness of the transform were isolated from the observed free air anomaly, was continued downward to the mean depth of the crust/mantle interface and converted onto the relief on that surface. The crustal thickness of the transform was then calculated by subtracting seawater depth from the depth of the gravity inferred crust/mantle interface.3 D gravity investigation results indicate that the Kane transform and adjacent areas are associated with a crust thinner than normal oceanic crust. The transform trough is largely underlain by a crust less than 4.5km thick and in the nodal basins the crust may be as thin as 3 km. The crust beneath the fracture zone valley is 4-5.5 km thick. The rift valleys on the spreading segments are also characterized by thin crust (4-5 km thick). Thin oceanic crust extends to 20-30 km from the transform axis,except for some localized places such as the inside corner highs adjoining the ridge transform intersections. These gravity inferred results match fairly well with limited published seismic results. Thinning of the crust is mainly attributable to a thin layer 3, which in turn may be explained by the combined effects of reduced magma supply at the ends of the spreading segments and tectonic activities in the region.展开更多
文摘在有关模式和产地标本研究的基础上,依据Wen & Frodin对该属植物的处理方式,对中国梁王茶属Metapanax Frodin ex J. Wen & Frodin (=Nothopanax Miq.)植物的原有两个变种贡山梁王茶(Nothopanax davidii (Franch.) Harms ex Diels var.gongshangensis Shang)、尾叶梁王茶(Nothopanax delavayi (Franch.) Harms ex Diels var.longicaudatus Feng)进行了分类学修订.结果将Nothopanax davidii (Franch.) Harms ex Diels var.gongshangensis Shang归入异叶梁王茶Metapanax davidii (Franch.) Frodin ex J. Wen & Frodin (=Nothopanax davidii (Franch.) Harms ex Diels)做为该种的新异名;并将尾叶梁王茶Nothopanax delavayi (Franch.) Harms ex Diels var.longicaudatus Feng 移入Metapanax属下,命名为Metapanax delavayi (Franch.) Frodin ex J. Wen & Frodin var.longicaudatus(Feng) R. Li & H. Li;此外,对国内有关专著中梁王茶属植物的学名作了相应的订正.
文摘A new approach was taken to investigate the crustal stucture of the Kane transform and its aseismic extension, using high quality bathymetry and gravity data. The gravity signatures associated with variations in crustal thickness of the transform were isolated from the observed free air anomaly, was continued downward to the mean depth of the crust/mantle interface and converted onto the relief on that surface. The crustal thickness of the transform was then calculated by subtracting seawater depth from the depth of the gravity inferred crust/mantle interface.3 D gravity investigation results indicate that the Kane transform and adjacent areas are associated with a crust thinner than normal oceanic crust. The transform trough is largely underlain by a crust less than 4.5km thick and in the nodal basins the crust may be as thin as 3 km. The crust beneath the fracture zone valley is 4-5.5 km thick. The rift valleys on the spreading segments are also characterized by thin crust (4-5 km thick). Thin oceanic crust extends to 20-30 km from the transform axis,except for some localized places such as the inside corner highs adjoining the ridge transform intersections. These gravity inferred results match fairly well with limited published seismic results. Thinning of the crust is mainly attributable to a thin layer 3, which in turn may be explained by the combined effects of reduced magma supply at the ends of the spreading segments and tectonic activities in the region.
