国际学生入学条件
Transcripts from all colleges or universities attended are required. Transcripts may be sent directly from the
Registrar of the institution you attended or transcripts issued directly to the applicant, and so marked, are
acceptable, and can be submitted online following the electronic submission process. If you attended Caltech as
an undergraduate, you must request an official transcript from the Office of the Registrar. We cannot obtain one
on your behalf.
Attach a CV or resume that includes the following, if applicable:
1) Teaching, professional, and vocational experience (include military service, but omit summer or part-time
work not relevant to your professional goals)
2) Research experience
3) Major academic recognitions, honors, and memberships in scientific, professional and honorary societies
4) Professional activities
5) Significant extracurricular activities
6) Conference presentations
7) Titles of publications,major papers, or theses authored or co-authored, if published provide citation. Do not
upload the entire document as the admissions committee often does not have the time to read a large file.
It is preferred that you either list or provide links or a URL where publications can be located.
Caltech does not have a minimum GPA requirement. However, most successful applicants have a US GPA of at least 3.5 on a 4.0 scale and/or are in the top 5 to 10% of their class.
GPA's should only be reported for those schools attended within the United States. International GPA's or rankings should not converted to the standard US grade point average.
Applicants who have studied in the US for two or more years
Applicants with a degree from a college or university whose primary instruction is in English
Please note that regardless of any documentation of English proficiency submitted as part of the admissions process, all non-native English speakers who have not attended a school where English is the primary language of instruction will be screened prior to enrollment and may be required to take additional English as a Second Language (ESL) courses.
There is no minimum requirement for the English proficiency exams. However, all new students who have had limited instruction in English will participate in a one-on-one English evaluation with the ESL instructor during Orientation and may be asked to enroll in an English as a Second Language (ESL) course.
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- 雅思总分:6
- 托福网考总分:60
- 托福笔试总分:160
- 其他语言考试:NA
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课程简介
Earth scientists can glean clues about the nature of Earth's ancient environments from a variety of clues: sedimentary textures and structures, chemical and isotopic compositions, microscopic to macroscopic fossils, and others. At Caltech we approach this problem from both ends of the time scale – working on modern analog organisms and environments to understand the signals they preserve, and on ancient sediments and rocks to try to decipher what the Earth was like thousands, millions, or billions of years ago.<br>A multidisciplinary study of the Neoproterozoic Athel Silicylite, using sedimentary fabrics, inorganic isotopic records, and organic biomarkers to propose a new model for this geologically unique unit (Grotzinger, Sessions, Eiler)<br>At Caltech we developed a novel method for measuring sulfur isotopes in nanogram quantities of sulfate in carbonate rocks, and used it to provide the first empirical constraints on sulfur cycling in the Archean oceans (Adkins, Fischer, Sessions)<br>Clumped isotope carbonate reconstructions<br>Using the hydrogen isotope ratios of leaf-wax biomarkers, we reconstructed the hydroclimate of western Sumatra over the past 15,000 years and showed it varied much less than did the western equatorial Pacific.
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