GEOLOGIC STRUCTURES

فهرست عناوین اصلی در این پاورپوینت

فهرست عناوین اصلی در این پاورپوینت

● GEOLOGIC STRUCTURES
● GEOLOG|IC STRUCTURES
● GEOLOGIC STRUCTURES
● Geologic Structures
● GEOLOGIC STRUCTURES

نوع زبان: انگلیسی حجم: 10.95 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 48 صفحه
سطح مطلب: نامشخص پسوند فایل: ppt
گروه موضوعی: زمان استخراج مطلب: 2019/05/17 06:55:56

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عبارات مهم استفاده شده در این مطلب

عبارات مهم استفاده شده در این مطلب

geologic, structure, fold, dip, fault, rock, surface, axis, non, erosion, anticline, –,

توجه: این مطلب در تاریخ 2019/05/17 06:55:56 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

http://courses.missouristate.edu/emantei/creative/PPTglg110/geostructures.ppt

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عبارات پرتکرار و مهم در این اسلاید عبارتند از: geologic, structure, fold, dip, fault, rock, surface, axis, non, erosion, anticline, –,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

geologic structures geologic structures strike and dip are attitudes in rocks produced by geologic forces when rocks are folded or faulted strike an imaginary line with compass direction expressed in bearing constructed on top of a sedimentary bed or fault in which all points on the line are of equal elevation characteristics formed in rocks caused by the disturbance from internal or external forces geologic structures dip imaginary line constructed on the down slope surface of a sedimentary bed or fault dip has ۲ attributes ۱ bearing of dip is perpendicular to strike direction ۲ angle of dip measured from horizontal plane to top of bed or fault dip cannot exceed ۹ degrees in a series of dipping sedimentary rocks the formations become progressively younger in the direction of their dip strike and dip on a folded structure geologic structures folded structures warps in rock layers and occur folded bended upwards downwards or sideways—compression forces are the prime cause of folds —important in mountain formation kinds of folds anticline a series of up arched strata sides limbs dip in opposite directions from central fold which is split by axial plane or fold axis geologic structures an eroded surface indicates a pattern of progressively younger rocks away from the fold axis geologic structures top map view of axial plane referred to as the fold axis anticline geologic structures syncline series of down arched strata dipping towards the fold axis on both sides formations become progressively older from fold axis on an eroded surface geologic structures anticline and syncline map view geologic structures types of anticlines and synclines symmetrical fold sides between axis or plane are symmetrical show a mirror image geologic structures asymmetrical fold no mirror image with respect to the axis or plane geologic structures overturned fold axial plane is tilted and beds may dip in same direction on both sides of plane or axis geologic structures recumbent fold axial plane lies essentially horizontal geologic structures plunging and non plunging anti syn clines plunging is tilting of fold backwards or forwards—all anticlines and synclines have a degree of plunge non plunging anticline syncline geolog ic structures plunging folds front view reveals type of fold top map view reveals type of fold curved outcrop patterns of eroded rocks in plunging anticlines and syncline with geologic structures plunge and fold axes in red anticline and syncline on a geologic map aerial photo of syncline and anticline anticline fold axis syncline fold axis geologic structures formation and occurrence of petroleum and natural gas in anticlines and synclines geologic structures monocline a bend in strata resulting in a local steepening in dip of strata which is almost flat lying on both sides of bend only one direction of dip geologic structures monocline continued geologic structures dome up arched strata with limbs dipping outwards from center through ۳۶ degrees age of rocks become progressively younger away from center on an eroded surface if circular no single fold axis—if elongated in shape there can be a fold axis assigned geologic structures salt dome dome in the sahara desert geologic map of a dome in new mexico geologic structures basin down arched series of strata with all beds dipping in towards center through ۳۶ degrees rocks become progressively older away from center on an eroded surface if circular no single fold axis—if elongated in shape there can be a fold axis assigned geologic map of the michigan basin geologic structures dome and basin geologic structures fault structures definition major displacement of rock material along a crack in a rock important in mountain formation types of faults based on relative movement along the cracked rock include vertical horizontal or a combination of these movements geologic structures vertical or dip slip faults movement along dip of fault hanging wall and footwall geologic structures normal fault gravity fault hanging wall moves down in respect to footwall—on a large scale can cause continental lengthening tensional forces mountains geologic structures reverse fault hanging wall moves up in respect to footwall low angle crack is called thrust fault—on a large scale can mountains cause continental shortening compressional forces reverse fault geologic structures horst and graben wedge of land that moves up horst or down graben between ۲ normal dip slip faults—caused by tensional forces best example is along the rhine river and the rhine valley graben geologic structures horizontal or strike slip fault horizontal movement along the strike of the fault—shear forces movement can be right or left lateral right lateral best example is san andreas fault in california right lateral geologic structures left lateral strike slip geologic structures oblique fault major dip slip and strike slip displacement along the cracked faulted rock—tensional and shear forces geologic structures joint structures definition cracks in rocks in which there is no appreciable displacement along the cracks often joints occur in ۲ sets of cracks intersecting between ۴۵ ۹ degrees dividing rocks into rectangular blocks geologic structures causes of joints unloading or sheeting effects see weathering compression forces example of ۹ degree jointing geologic structures photo of ۹ degree jointing geologic structures stresses in a cooling magma—hexagonal or columnar jointing best example of igneous jointing is devil’s tower wyoming geologic structures unconformity structures definition is a surface of non deposition or erosion which represents a break in the rock record includes a sequence of geologic events associated with the massive erosion surface kinds of unconformities based on events prior to and after the time of non deposition or erosion geologic structures disconformity series of sedimentary rocks appear above and below the non deposition or erosion surface contacts of the sedimentary formations and the non deposition or erosion surface are parallel blue lines represent non deposition or erosion surfaces geologic structures angular unconformity folded or tilted series of formations appear below the non deposition or erosion surface and a series of sedimentary beds above the contacts of the latter are parallel to non deposition or erosion surface blue line represents the non deposition or erosion surface geologic structures nonconformity igneous or metamorphic rock below non deposition or erosion surface and a series of sedimentary beds below contacts of the latter parallel non deposition or erosion surface geologic …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: geologic, structure, fold, dip, fault, rock, surface, axis, non, erosion, anticline, –,

این فایل پاورپوینت شامل 48 اسلاید و به زبان انگلیسی و حجم آن 10.95 مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/05/17 06:55:56 استخراج شده است.

http://courses.missouristate.edu/emantei/creative/PPTglg110/geostructures.ppt

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