{"id":68273,"date":"2025-07-26T06:23:40","date_gmt":"2025-07-26T06:23:40","guid":{"rendered":"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/"},"modified":"2025-07-26T06:23:40","modified_gmt":"2025-07-26T06:23:40","slug":"20-petrography-quiz-questions-and-answers","status":"publish","type":"post","link":"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/","title":{"rendered":"20 Petrography Quiz Questions and Answers"},"content":{"rendered":"<p>Petrography is the branch of petrology that focuses on the detailed description, classification, and analysis of rocks through macroscopic and microscopic examination. It involves studying the mineral composition, texture, structure, and fabric of rocks to understand their origin, formation processes, and geological history.<\/p>\n<p>Key techniques in petrography include:<br \/>\nMacroscopic analysis: Visual inspection of hand samples to observe color, grain size, layering, and overall appearance.<br \/>\nMicroscopic analysis: Using a petrographic microscope on thin sections (slices of rock about 30 micrometers thick) to identify minerals based on optical properties such as birefringence, pleochroism, and extinction angles.<br \/>\nAdvanced methods: Incorporating electron microscopy, X-ray diffraction, and chemical analysis to enhance mineral identification and quantify rock properties.<\/p>\n<p>Petrography applies to various rock types:<br \/>\nIgneous rocks: Examining crystal size, shapes, and arrangements to infer cooling rates and magma composition (e.g., in basalts or granites).<br \/>\nSedimentary rocks: Analyzing grains, cements, and fossils to determine depositional environments and diagenetic changes (e.g., in sandstones or limestones).<br \/>\nMetamorphic rocks: Assessing foliation, recrystallization, and mineral assemblages to reconstruct metamorphic conditions (e.g., in schists or gneisses).<\/p>\n<p>This field is essential in geology for resource exploration, environmental studies, engineering (e.g., assessing rock stability), and archaeological dating. By integrating petrographic data with other geological sciences, it provides insights into Earth&#8217;s crustal evolution and natural processes.<\/p>\n<h3>Table of contents<\/h3>\n<ul class=\"article_list\">\n<li><a href=\"#1\">Part 1: OnlineExamMaker &#8211; Generate and share petrography quiz with AI automatically<\/a><\/li>\n<li><a href=\"#2\">Part 2: 20 petrography quiz questions &#038; answers<\/a><\/li>\n<li><a href=\"#3\">Part 3: Save time and energy: generate quiz questions with AI technology <\/a><\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/onlineexammaker.com\/kb\/wp-content\/uploads\/2025\/08\/1593-petrography.webp\" alt=\"\"\/><\/p>\n<h3 id=\"1\">Part 1: OnlineExamMaker &#8211; Generate and share petrography quiz with AI automatically<\/h3>\n<p>The quickest way to assess the petrography knowledge of candidates is using an AI assessment platform like OnlineExamMaker. With OnlineExamMaker AI Question Generator,  you are able to input content\u2014like text, documents, or topics\u2014and then automatically generate questions in various formats (multiple-choice, true\/false, short answer). Its AI Exam Grader can automatically grade the exam and generate insightful reports after your candidate submit the assessment.<\/p>\n<p><strong>What you will like:<\/strong><br \/>\n\u25cf Create a question pool through the question bank and specify how many questions you want to be randomly selected among these questions.<br \/>\n\u25cf Allow the quiz taker to answer by uploading video or a Word document, adding an image, and recording an audio file.<br \/>\n\u25cf Display the feedback for correct or incorrect answers instantly after a question is answered.<br \/>\n\u25cf Create a lead generation form to collect an exam taker&#8217;s information, such as email, mobile phone, work title, company profile and so on. <\/p>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/zlqho9igH2Y\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">Automatically generate questions using AI<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html?refer=download_questions\" target=\"_blank\" rel=\"noopener\">Try AI Question Generator<\/a><\/div>\n<div class=\"p-style-b\">Generate questions for any topic<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> Create A Quiz<\/a><\/div>\n<div class=\"p-style-b\">100% free forever<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 id=\"2\">Part 2: 20 petrography quiz questions &#038; answers<\/h3>\n<p><button id=\"copyquestionsBtn\" type=\"button\" onclick=\"myFunction()\">Copy Quiz Questions<\/button>\u00a0\u00a0or\u00a0\u00a0<button id=\"genquestionsBtn\" class=\"genbtnstyle\" type=\"button\" onclick=\"myFunction1()\">Generate Questions using AI<\/button><\/p>\n<div id=\"copy_questions\">\n<p>1. <strong>Question<\/strong>: What is the primary texture observed in basalt?<br \/>\n   A. Phaneritic<br \/>\n   B. Aphanitic<br \/>\n   C. Porphyritic<br \/>\n   D. Vesicular<br \/>\n   <strong>Answer<\/strong>: B. Aphanitic<br \/>\n   <strong>Explanation<\/strong>: Basalt is a fine-grained igneous rock that cools quickly, resulting in an aphanitic texture where crystals are too small to be seen with the naked eye.<\/p>\n<p>2. <strong>Question<\/strong>: Which mineral is commonly used to identify the protolith in metamorphic rocks?<br \/>\n   A. Quartz<br \/>\n   B. Garnet<br \/>\n   C. Olivine<br \/>\n   D. Calcite<br \/>\n   <strong>Answer<\/strong>: B. Garnet<br \/>\n   <strong>Explanation<\/strong>: Garnet often forms in metamorphic rocks and can indicate the original rock type based on its composition and association with other minerals.<\/p>\n<p>3. <strong>Question<\/strong>: In petrographic analysis, what does the term &#8220;cleavage&#8221; refer to?<br \/>\n   A. The color of a mineral<br \/>\n   B. The way a mineral breaks along planes of weakness<br \/>\n   C. The crystal shape<br \/>\n   D. The hardness of a mineral<br \/>\n   <strong>Answer<\/strong>: B. The way a mineral breaks along planes of weakness<br \/>\n   <strong>Explanation<\/strong>: Cleavage is a key optical property in petrography that helps identify minerals by observing how they fracture.<\/p>\n<p>4. <strong>Question<\/strong>: Which rock type is characterized by graded bedding in petrographic thin sections?<br \/>\n   A. Igneous<br \/>\n   B. Sedimentary<br \/>\n   C. Metamorphic<br \/>\n   D. Volcanic<br \/>\n   <strong>Answer<\/strong>: B. Sedimentary<br \/>\n   <strong>Explanation<\/strong>: Graded bedding is a sedimentary structure formed by deposition from turbidity currents, visible in thin sections as varying grain sizes.<\/p>\n<p>5. <strong>Question<\/strong>: What optical property is observed when a mineral exhibits double refraction?<br \/>\n   A. Birefringence<br \/>\n   B. Pleochroism<br \/>\n   C. Extinction<br \/>\n   D. Twinning<br \/>\n   <strong>Answer<\/strong>: A. Birefringence<br \/>\n   <strong>Explanation<\/strong>: Birefringence occurs when light splits into two rays in anisotropic minerals, a common feature examined under a polarizing microscope in petrography.<\/p>\n<p>6. <strong>Question<\/strong>: In igneous petrography, what does a glassy texture indicate?<br \/>\n   A. Slow cooling<br \/>\n   B. Rapid cooling<br \/>\n   C. High pressure<br \/>\n   D. Low temperature<br \/>\n   <strong>Answer<\/strong>: B. Rapid cooling<br \/>\n   <strong>Explanation<\/strong>: A glassy texture, as in obsidian, forms when magma cools too quickly for crystals to develop.<\/p>\n<p>7. <strong>Question<\/strong>: Which accessory mineral is often used for radiometric dating in petrographic studies?<br \/>\n   A. Zircon<br \/>\n   B. Feldspar<br \/>\n   C. Mica<br \/>\n   D. Pyroxene<br \/>\n   <strong>Answer<\/strong>: A. Zircon<br \/>\n   <strong>Explanation<\/strong>: Zircon crystals contain uranium and lead, making them ideal for age determination through methods like U-Pb dating.<\/p>\n<p>8. <strong>Question<\/strong>: What is the typical fabric observed in foliated metamorphic rocks?<br \/>\n   A. Random grain orientation<br \/>\n   B. Layered or banded alignment<br \/>\n   C. Spherical structures<br \/>\n   D. Porous texture<br \/>\n   <strong>Answer<\/strong>: B. Layered or banded alignment<br \/>\n   <strong>Explanation<\/strong>: Foliation in metamorphic rocks results from directed pressure, causing minerals to align in parallel layers.<\/p>\n<p>9. <strong>Question<\/strong>: In petrography, how is the term &#8220;intergranular&#8221; porosity described?<br \/>\n   A. Pores between grains<br \/>\n   B. Pores within grains<br \/>\n   C. Fractures in rocks<br \/>\n   D. Voids from dissolution<br \/>\n   <strong>Answer<\/strong>: A. Pores between grains<br \/>\n   <strong>Explanation<\/strong>: Intergranular porosity refers to the space between sediment or rock grains, which is crucial for understanding reservoir rocks.<\/p>\n<p>10. <strong>Question<\/strong>: Which mineral shows high relief in thin sections due to its high refractive index?<br \/>\n    A. Quartz<br \/>\n    B. Rutile<br \/>\n    C. Muscovite<br \/>\n    D. Orthoclase<br \/>\n    <strong>Answer<\/strong>: B. Rutile<br \/>\n    <strong>Explanation<\/strong>: Rutile has a high refractive index, causing it to stand out with high relief against other minerals in petrographic analysis.<\/p>\n<p>11. <strong>Question<\/strong>: What does the presence of cross-bedding indicate in sedimentary petrography?<br \/>\n    A. Wind or water currents<br \/>\n    B. Volcanic activity<br \/>\n    C. High temperature<br \/>\n    D. Chemical precipitation<br \/>\n    <strong>Answer<\/strong>: A. Wind or water currents<br \/>\n    <strong>Explanation<\/strong>: Cross-bedding forms from the migration of sediments by currents, providing clues about depositional environments.<\/p>\n<p>12. <strong>Question<\/strong>: In petrographic terms, what is &#8220;extinction angle&#8221; used for?<br \/>\n    A. Identifying plagioclase feldspar<br \/>\n    B. Measuring mineral hardness<br \/>\n    C. Determining rock age<br \/>\n    D. Assessing porosity<br \/>\n    <strong>Answer<\/strong>: A. Identifying plagioclase feldspar<br \/>\n    <strong>Explanation<\/strong>: Extinction angle in polarized light helps distinguish types of plagioclase based on the angle at which minerals go dark.<\/p>\n<p>13. <strong>Question<\/strong>: Which texture is indicative of a plutonic igneous rock?<br \/>\n    A. Vesicular<br \/>\n    B. Phaneritic<br \/>\n    C. Pyroclastic<br \/>\n    D. Aphanitic<br \/>\n    <strong>Answer<\/strong>: B. Phaneritic<br \/>\n    <strong>Explanation<\/strong>: Phaneritic texture, with visible interlocking crystals, forms in slowly cooling intrusive rocks like granite.<\/p>\n<p>14. <strong>Question<\/strong>: What feature is commonly associated with contact metamorphism in petrography?<br \/>\n    A. Aureoles<br \/>\n    B. Fault lines<br \/>\n    C. Sedimentary layers<br \/>\n    D. Volcanic flows<br \/>\n    <strong>Answer<\/strong>: A. Aureoles<br \/>\n    <strong>Explanation<\/strong>: Contact metamorphism creates metamorphic aureoles, zones of altered rock around igneous intrusions.<\/p>\n<p>15. <strong>Question<\/strong>: In thin section analysis, what does a mineral&#8217;s interference color indicate?<br \/>\n    A. Its birefringence<br \/>\n    B. Its density<br \/>\n    C. Its chemical composition<br \/>\n    D. Its origin<br \/>\n    <strong>Answer<\/strong>: A. Its birefringence<br \/>\n    <strong>Explanation<\/strong>: Interference colors in crossed polars result from birefringence, helping to identify minerals like quartz or calcite.<\/p>\n<p>16. <strong>Question<\/strong>: Which rock is typically examined for microfossils in petrographic studies?<br \/>\n    A. Limestone<br \/>\n    B. Granite<br \/>\n    C. Basalt<br \/>\n    D. Gneiss<br \/>\n    <strong>Answer<\/strong>: A. Limestone<br \/>\n    <strong>Explanation<\/strong>: Limestone often contains microfossils, which are preserved organic remains visible in thin sections.<\/p>\n<p>17. <strong>Question<\/strong>: What does the term &#8220;seriate texture&#8221; mean in igneous petrography?<br \/>\n    A. Grains of varying sizes<br \/>\n    B. Uniform grain size<br \/>\n    C. Layered grains<br \/>\n    D. Glassy matrix<br \/>\n    <strong>Answer<\/strong>: A. Grains of varying sizes<br \/>\n    <strong>Explanation<\/strong>: Seriate texture features a range of crystal sizes, indicating variable cooling rates in igneous rocks.<\/p>\n<p>18. <strong>Question<\/strong>: In metamorphic petrography, what is &#8220;recrystallization&#8221;?<br \/>\n    A. Reforming of minerals under heat and pressure<br \/>\n    B. Erosion of rock surfaces<br \/>\n    C. Addition of new elements<br \/>\n    D. Formation of pores<br \/>\n    <strong>Answer<\/strong>: A. Reforming of minerals under heat and pressure<br \/>\n    <strong>Explanation<\/strong>: Recrystallization involves the reorganization of mineral grains, leading to new textures in metamorphic rocks.<\/p>\n<p>19. <strong>Question<\/strong>: Which optical effect is seen in minerals like tourmaline under the microscope?<br \/>\n    A. Pleochroism<br \/>\n    B. Fluorescence<br \/>\n    C. Luminescence<br \/>\n    D. Opalescence<br \/>\n    <strong>Answer<\/strong>: A. Pleochroism<br \/>\n    <strong>Explanation<\/strong>: Pleochroism causes color changes in minerals when viewed from different angles in polarized light.<\/p>\n<p>20. <strong>Question<\/strong>: What is the significance of twinning in petrographic identification?<br \/>\n    A. It helps distinguish minerals like plagioclase<br \/>\n    B. It indicates rock age<br \/>\n    C. It measures porosity<br \/>\n    D. It shows chemical reactions<br \/>\n    <strong>Answer<\/strong>: A. It helps distinguish minerals like plagioclase<br \/>\n    <strong>Explanation<\/strong>: Twinning, such as albite twinning, is a crystal structure feature used to identify specific minerals in thin sections.<\/p>\n<\/div>\n<p><button id=\"copyquestionsBtn\" type=\"button\" onclick=\"myFunction()\">Copy Quiz Questions<\/button>\u00a0\u00a0or\u00a0\u00a0<button id=\"genquestionsBtn\" class=\"genbtnstyle\" type=\"button\" onclick=\"myFunction1()\">Generate Questions using AI<\/button><\/p>\n<h3 id=\"3\">Part 3: Save time and energy: generate quiz questions with AI technology<\/h3>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/zlqho9igH2Y\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">Automatically generate questions using AI<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html?refer=download_questions\" target=\"_blank\" rel=\"noopener\">Try AI Question Generator<\/a><\/div>\n<div class=\"p-style-b\">Generate questions for any topic<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> Create A Quiz<\/a><\/div>\n<div class=\"p-style-b\">100% free forever<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><script src=\"https:\/\/unpkg.com\/@popperjs\/core@2\"><\/script><br \/>\n<script src=\"https:\/\/unpkg.com\/tippy.js@6\"><\/script><\/p>\n<p><script type=\"text\/javascript\">\nfunction myFunction() {\nvar copyText = document.getElementById(\"copy_questions\");console.log(copyText.innerText);navigator.clipboard.writeText(copyText.innerText);\n}\nfunction myFunction1() {\n\u00a0  \u00a0 \u00a0 window.open(\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html\");\n\u00a0 }\nvar copy1, copy2;\n        tippy('#copyquestionsBtn', {\n        'content': \"Copy questions to clipboard\",\n       trigger: 'mouseenter',\n       'onCreate':function(instance){\n              copy1 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy2.hide();\n       }\n       });\n       tippy('#copyquestionsBtn', {\n       'content': \"Copied successfully\",\n       trigger: 'click',\n       'onCreate':function(instance){\n              copy2 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy1.hide();\n       }\n       });\ntippy('#genquestionsBtn', {\n        'content': \"Generate questions using AI for free\",\n         trigger: 'mouseenter'\n       });\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Petrography is the branch of petrology that focuses on the detailed description, classification, and analysis of rocks through macroscopic and microscopic examination. It involves studying the mineral composition, texture, structure, and fabric of rocks to understand their origin, formation processes, and geological history. Key techniques in petrography include: Macroscopic analysis: Visual inspection of hand samples [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":67897,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[353],"tags":[],"class_list":["post-68273","post","type-post","status-publish","format-standard","hentry","category-questions-answers"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>20 Petrography Quiz Questions and Answers - OnlineExamMaker Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"20 Petrography Quiz Questions and Answers - OnlineExamMaker Blog\" \/>\n<meta property=\"og:description\" content=\"Petrography is the branch of petrology that focuses on the detailed description, classification, and analysis of rocks through macroscopic and microscopic examination. 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Key techniques in petrography include: Macroscopic analysis: Visual inspection of hand samples [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/\" \/>\n<meta property=\"og:site_name\" content=\"OnlineExamMaker Blog\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-26T06:23:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/onlineexammaker.com\/kb\/wp-content\/uploads\/2025\/08\/1593-petrography.webp\" \/>\n<meta name=\"author\" content=\"Rebecca\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Rebecca\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/\",\"url\":\"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/\",\"name\":\"20 Petrography Quiz Questions and Answers - OnlineExamMaker Blog\",\"isPartOf\":{\"@id\":\"https:\/\/onlineexammaker.com\/kb\/#website\"},\"datePublished\":\"2025-07-26T06:23:40+00:00\",\"dateModified\":\"2025-07-26T06:23:40+00:00\",\"author\":{\"@id\":\"https:\/\/onlineexammaker.com\/kb\/#\/schema\/person\/8447ed5937ab8046fa68476e432b32b2\"},\"breadcrumb\":{\"@id\":\"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/onlineexammaker.com\/kb\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"20 Petrography Quiz Questions and Answers\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/onlineexammaker.com\/kb\/#website\",\"url\":\"https:\/\/onlineexammaker.com\/kb\/\",\"name\":\"OnlineExamMaker Blog\",\"description\":\"OnlineExamMaker\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/onlineexammaker.com\/kb\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/onlineexammaker.com\/kb\/#\/schema\/person\/8447ed5937ab8046fa68476e432b32b2\",\"name\":\"Rebecca\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/onlineexammaker.com\/kb\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/5f03edf06dd3745ea73e610a6d830a63?s=96&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/5f03edf06dd3745ea73e610a6d830a63?s=96&r=g\",\"caption\":\"Rebecca\"},\"url\":\"https:\/\/onlineexammaker.com\/kb\/author\/rebeccaoem\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"20 Petrography Quiz Questions and Answers - OnlineExamMaker Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/onlineexammaker.com\/kb\/20-petrography-quiz-questions-and-answers\/","og_locale":"en_US","og_type":"article","og_title":"20 Petrography Quiz Questions and Answers - OnlineExamMaker Blog","og_description":"Petrography is the branch of petrology that focuses on the detailed description, classification, and analysis of rocks through macroscopic and microscopic examination. 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