Plate subduction leads to complex exhumation processes on continents.The Huangling Massif lies at the northern margin of the South China Block.Whether the Huangling Massif was exhumed as a watershed of the middle reac...Plate subduction leads to complex exhumation processes on continents.The Huangling Massif lies at the northern margin of the South China Block.Whether the Huangling Massif was exhumed as a watershed of the middle reaches of the Paleo-Yangtze River during the Mesozoic remains under debate.We examined the exhumation history of the Huangling Massif based on six granite bedrock samples,using apatite fission track(AFT)and apatite and zircon(U-Th)/He(AHe and ZHe)thermochronology.These samples yielded ages of 157–132 Ma(ZHe),119–106 Ma(AFT),and 114–72 Ma(AHe),respectively.Thermal modeling revealed that three phases of rapid cooling occurred during the Late Jurassic–Early Cretaceous,late Early Cretaceous,and Late Cretaceous.These exhumation processes led to the high topographic relief responsible for the emergence of the Huangling Massif.The integrated of our new data with published sedimentological records suggests that the Huangling Massif might have been the watershed of the middle reaches of the Paleo-Yangtze River since the Cretaceous.At that time,the rivers flowed westward into the Sichuan Basin and eastward into the Jianghan Basin.The subduction of the Pacific Plate beneath the Asian continent in the Mesozoic deeply influenced the geomorphic evolution of the South China Block.展开更多
恶性黑色素瘤是一种起源于胚胎期神经嵴黑素细胞的高度恶性肿瘤,好发于表面皮肤,也可见于头颈部、眼葡萄膜、泌尿生殖道黏膜、消化道(多为直肠肛管)。但原发于食管的恶性黑色素瘤极为罕见,占原发性食管恶性肿瘤的0.1~0.2%^([1]),占全部...恶性黑色素瘤是一种起源于胚胎期神经嵴黑素细胞的高度恶性肿瘤,好发于表面皮肤,也可见于头颈部、眼葡萄膜、泌尿生殖道黏膜、消化道(多为直肠肛管)。但原发于食管的恶性黑色素瘤极为罕见,占原发性食管恶性肿瘤的0.1~0.2%^([1]),占全部恶性黑色素瘤的0.05~0.2%^([2-3]),占非皮肤来源的黑色素瘤0.5%^([4]),好发于中老年男性^([5]),主要位于食管中下段,伴或不伴色素沉着^([6])。本文报道一例非常罕见的首发无色素沉着的食管上段恶性黑色素瘤(primary malignant melanoma of the esophagus,PMME)女性患者。以探讨食管恶性黑色素瘤的临床诊治、病理特点,提高临床医师对此病的认识。展开更多
基金financially supported by the National Natural Science Foundation of China(Grant Nos.41671011,41871019,41877292,41972212)Research Foundation of Chutian Scholars Program of Hubei Province(Grant No.8210403)Shanxi Key Research and Development program:Feng Cheng(Grant No.2021SF2-03).
文摘Plate subduction leads to complex exhumation processes on continents.The Huangling Massif lies at the northern margin of the South China Block.Whether the Huangling Massif was exhumed as a watershed of the middle reaches of the Paleo-Yangtze River during the Mesozoic remains under debate.We examined the exhumation history of the Huangling Massif based on six granite bedrock samples,using apatite fission track(AFT)and apatite and zircon(U-Th)/He(AHe and ZHe)thermochronology.These samples yielded ages of 157–132 Ma(ZHe),119–106 Ma(AFT),and 114–72 Ma(AHe),respectively.Thermal modeling revealed that three phases of rapid cooling occurred during the Late Jurassic–Early Cretaceous,late Early Cretaceous,and Late Cretaceous.These exhumation processes led to the high topographic relief responsible for the emergence of the Huangling Massif.The integrated of our new data with published sedimentological records suggests that the Huangling Massif might have been the watershed of the middle reaches of the Paleo-Yangtze River since the Cretaceous.At that time,the rivers flowed westward into the Sichuan Basin and eastward into the Jianghan Basin.The subduction of the Pacific Plate beneath the Asian continent in the Mesozoic deeply influenced the geomorphic evolution of the South China Block.
文摘恶性黑色素瘤是一种起源于胚胎期神经嵴黑素细胞的高度恶性肿瘤,好发于表面皮肤,也可见于头颈部、眼葡萄膜、泌尿生殖道黏膜、消化道(多为直肠肛管)。但原发于食管的恶性黑色素瘤极为罕见,占原发性食管恶性肿瘤的0.1~0.2%^([1]),占全部恶性黑色素瘤的0.05~0.2%^([2-3]),占非皮肤来源的黑色素瘤0.5%^([4]),好发于中老年男性^([5]),主要位于食管中下段,伴或不伴色素沉着^([6])。本文报道一例非常罕见的首发无色素沉着的食管上段恶性黑色素瘤(primary malignant melanoma of the esophagus,PMME)女性患者。以探讨食管恶性黑色素瘤的临床诊治、病理特点,提高临床医师对此病的认识。
