辽东半岛大孤山古溺谷平原沉积环境的复原——基于岩心黏土混浊水电导率和pH值以及硅藻组合
Edimentary environmental analysis based on the electric conductivity and pH of stirred clayed drilling cores in water and diatom recovered from the old drowned valley plain in The Dagu Mountain, Liaodong Peninsula in China
-
摘要: 对位于辽东半岛大孤山北侧砬底村沟谷中的钻孔岩心作黏土混浊水电导率、硅藻分析和pH值测定。结果显示黏土混浊水电导率曲线和咸水种硅藻含量曲线大体一致,表明黏土混浊水电导率和硅藻分析具有良好的一致性,可以相互印证。据硅藻组合、土导电率值和pH值的结果,将LD孔岩心从下到上分为4个沉积环境带:Ⅰ带为全新世海侵期的溺谷环境;Ⅱ带海水影响逐渐减弱的潮间带环境;Ⅲ带的泥炭环境分为Ⅲ-1带的受外洋海水影响的盐性沼泽湿地环境和Ⅲ-2带为积水的淡水湖沼环境;Ⅳ带分为两个亚带,Ⅳ-1带为有一定水深的陆相沼泽湿地环境,Ⅳ-2带为受海水影响的陆相沼泽湿地环境。另外黏土混浊水电导率与pH值也呈良好的反相关对应关系,这表明pH值也可以成为恢复古环境的一个重要的辅助指标。Abstract: By analyzing drilling cores in gullies which are located in the Lidi Villiage, the northern Dagu Mountain, the Liaodong Peninsula, the results show that the conductivity, diatom analysis results and pH of the clay turbidity water were in the main accordance with the conductivity curve and the salty water diatom curve of the clay turbidity water. By combining the result of diatoms with the conductivity and the pH value of clay, the plain-LD-core is divided into four zones: the Ⅰ zone is the drowned marine-layer in the Holocene transgression, the Ⅱ zone is the intertidal environment which is affected gradually by seawater, the Ⅲ zone is divided into two subzone, they are Ⅲ-1 zone (salt marsh wetlands) and Ⅲ-2 zone(fresh water lake ) respectively. the same to the Ⅳ zone, the Ⅳ-1 zone is a certain depth of the swamp wetland which is not affected by seawater. but the Ⅳ-2 zone is a swamp wetland which is affected by water. The results show that the good consistency between diatom analysis and clay muddy water can be as an important means for distinguishing land facies and sea facies, in addition, the conductivity curve of the clay turbidity water is in good negative correlation with pH, which shows that the conductivity curve of the clay turbidity water is in good accordance with diatom analysis results and they can be used as mutual verification.
-
横山卓雄.电气传导度测定法 [G]//第四纪试料分析法(2).东京:东京大学出版会,1993:109-118. 横山卓雄,佐藤万寿美.黏土混濁水の電気伝導度による古環境の推定——千里山丘陵東端部および琵琶湖湖底によるボーリング·コアの場合[J].地質学雑誌,1987, 93(9): 667-679. 佐藤万寿美. 黏土混濁水の電気伝導度による古環境の推定: 関西国際空港ボーリング·コアの場合[J].地質学雑誌,1992, 43(5): 375-382. 内園立男,森永一. 濃尾平野南部ボーリングコアの黏土混濁水の電気伝導度およびpH測定に基づく堆積環境の測定[J].第四紀研究,2004, 98(9): 825-839. 川瀬久美子.三重県雲出川下流部における海岸低地の形成と堆積環境の変遷[J].地理学評論,2003, 76A: 211-230. 小野映介,大平明夫,田中和徳,等.完新世後期の越後平野中部における河川供給土砂の堆積場を考慮した地形発達史[J].第四紀研究,2006, 45(1): 1-14. 丹羽雄一, 須貝俊彦, 大上隆史,等.相対的海水準の急激な上昇イベントが示唆する養老断層系の完新世活動——濃尾平野西縁におけるボ-リングコアの解析から[J].地学雑誌,2010, 119(4): 668-682. 方晶,李英硕,介冬梅,等. 黏土混浊水电导率在海岸变迁上的应用-以下辽河平原为例[J]. 第四纪研究,2006, 26(3): 493-494. 方晶,武亚芳,李瑞武,等. 辽宁沿海早、中期全新世海进中的一次海退事件[J].地学前缘, 2009, 16(2): 376-403. 方晶,胡克,杨永强. 辽东半岛长兴岛八岔沟古泻湖型泥炭的形成及全新世最高海平面[J].吉林大学学报: 地球科学版,2009, 39(3): 461-469. 刘素巧,方晶,胡克,等. 辽东半岛大清河海岸平原全新世海陆变迁[J].海洋科学进展,2010, 28(4): 4-12. BERNER R A. Sedimentary pyrite formation[J]. Amer Jour Sci, 1970, 268: 1-23. 中井信之,太田友子,藤沢寛,等. 堆積物コアの炭素同位体比,C/N比およびFeS2含有量からみた名古屋港周辺の古気候,古海水準変動[J].第四紀研究,1982, 21(3): 169-177. 堀部純男, 坪田博行. 海水中の物質の動き [G]//堀部純男.海洋環境科学. 东京: 東京大学出版会, 1977: 93-149. 方晶,胡克. 辽东半岛大孤山一带沟谷埋藏泥炭的硅藻组合以及古环境和全新世最高海平面[J]. 第四纪研究,2007, 27(5): 797-805. 緒方芳雄,小幡一行,中角明.千里山丘陵東部ボーリング·コア(SEC-Core)から知られる海進·海退の様相について [D]. 同志社大学工学部地学研究室, 1987. 兰彬斌,蓝东兆,郑志昌,等.西江三角洲岩心中的硅藻及其记录的古环境[J]. 海洋学报,2008, 30(1): 93-99. 鹿岛薫.沖積層中の珪藻遺骸群集の推移と完新世の古環境変遷[J].地理学評論,1986, 59(7): 383-403. 小杉正人.珪藻の環境指標種群の設定と古環境復元への応用[J].第四紀研究,1988, 27(1): 1-20. CONNELL W E, PATRICK J R. W.H.sulfate reduction in soil: effects of redox potential and pH[J]. Science, 1968, 159: 86-87. KELLOGG W W, CADLE R D, ALLEN E R, el al.The sulfur cycle[J]. Science, 1972, 175: 587-596. GOLDMAN C R, HORNE A J. Limnology[M]. McGraw-Hill,Inc, 1983: 464. -
计量
- 文章访问数: 1346
- HTML全文浏览量: 18
- PDF下载量: 1231
- 被引次数: 0
下载:
