同斜层

同斜层（）是一種地質結構，指一系列岩層，無論是沉積岩還是火成岩，都沿單一方向均勻傾斜。具有相同的傾角方向和角度 Jackson, JA, J Mehl and K Neuendorf (2005) Glossary of Geology. American Geological Institute, Alexandria, Virginia. 800 pp. ISBN 978-0922152896Huggett, JR (2011) Fundamentals of Geomorphology, 3rd ed., Routledge, New York. 516 pp. ISBN 9780415567756.同斜层可以是褶皺構造的一個褶皺翼、圓頂構造的邊緣、在沿海平原下的向大海傾斜的地層、逆衝斷層的斷塊或傾斜斷層的斷塊。若地層由不同硬度和抗侵蝕性的交替岩層組成時，被侵蝕后會產生 單面山、同向山脊或豬背嶺 Thornbury, W. D., 1954, Principles of Geomorphology New York, John Wiley & Sons, 618 pp Twidale, C.R., and E.M. Campbell (1993) Australian Landforms: Structure, Process and Time. Gleneagles Publishing, Adelaide, South Australia, Australia. 568 pp. ISBN 9781875553020 Gerrard, J (1988) Rocks and landforms. Allen & Unwin Inc.,Winchester, Mass. 319 pp. ISBN 9780045511129。在地形圖上，同斜层可由幾乎平行的等高線認出，而些等高線在同一方向上具有相同高度變化。在地下，它們為特徵是具有平行的構造線 Reynolds, SJ, and GH Davis (1996) Structural geology of rocks and regions. John Wiley, New York, New York. 864 pp. ISBN 9780045511129。

Unicline 和 Uniclinal是兩個混淆的地質名詞，目前已不被采Thomas, G, and A Goudie (2000) The Dictionary of Physical Geography, 3rd ed. Blackwell Publishing Ltd., Maiden, Massachusetts. 624 pp. ISBN 978-0631204732U.S. Bureau of Mines Staff (1996) Dictionary of Mining, Mineral, & Related Terms. Report SP-96-1, U.S. Department of Interior, U.S. Bureau of Mines, Washington, D.C.  Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, J.A., eds. (2005) Glossary of Geology (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. ISBN 0-922152-76-4Grabau, AW (1920a) Unicline; a term proposed for monoclinal ridges of erosion. Geological Society of America Bulletin. 31(1):153.。 Grabau, AW (1920b) A Comprehensive Geology, vol. 1 D. C. Heath & Company, New York, New York. 804 pp..

若一系列沉積岩或火成岩地層，具有不同抵抗侵蝕的交替地層，它們的同斜层會形成獨特的地貌，例如，根據傾角不同 地形可漸變從單面山到同斜山脊到豬背脊。抵抗侵蝕力較小的地層優先被侵蝕，形成山谷。抵抗侵蝕力較大的地層則形成的山脊。抗抵抗侵蝕能力差異越大，谷與脊之間的起伏越明顯  。
參考文獻

Category:構造地質學
Category:地貌学