Journal profile · Geosciences, Multidisciplinary
Episodes
ISSN 0705-3797 · International Union of Geological Sciences · PEOPLES R CHINA · Quarterly
Episodes: CAS Zone 4 · Earth Sciences (2025 upgraded edition); impact factor 1.46; fully open access; median 166 days to acceptance (89 articles, last 24 months); community-reported acceptance: easy; 50 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Episodes is published by International Union of Geological Sciences and is in Zone 4 of Earth Sciences in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Geological and Geochemical Analysis, Geochemistry and Geologic Mapping and Geology and Paleoclimatology Research, together about 30.3% of its articles. (generated from OpenAlex topic counts and CAS ranking data)
Episodes is the quarterly journal of the International Union of Geological Sciences, published in Seoul, Korea. In circulation since 1978, Episodes is an international and interdisciplinary open access and free, both to submit and download, publication journal that covers all geoscience disciplines, including economic geology, environmental geology, geochemistry, geoethics, geoheritage, geophysics, hydrogeology, mineralogy, paleontology, petroleum geology, petrology, sedimentology, stratigraphy, structural geology, remote sensing, planetary geology, and social science (metric and diversity in publications and citations in Earth Sciences). Episodes includes authoritative articles that reflect global research advances, evolving trends in geoscience disciplines and concise reports on the results of international meetings, conferences, and symposia. It is a high visibility journal, and is indexed in Science Citation Index (SCI), Science Citation Index Expanded (SCIE; Web of Science), and Journal Citation Reports (JCR)/Science Edition, along with many other databases such as SCOPUS. Submitted manuscripts are peer-reviewed, and a first decision is provided to authors approximately within 30 days after submission.
Source: LetPub
Research area (LetPub): Geosciences, Multidisciplinary
Main research topics OpenAlex counts of recent articles; shares are approximate
- Geological and Geochemical AnalysisEarth and Planetary Sciences11.4%
- Geochemistry and Geologic MappingComputer Science10.6%
- Geology and Paleoclimatology ResearchEarth and Planetary Sciences8.3%
- earthquake and tectonic studiesEarth and Planetary Sciences6.8%
- Geological Studies and ExplorationEarth and Planetary Sciences6.4%
- Paleontology and Stratigraphy of FossilsEarth and Planetary Sciences6.3%
- Geological and Geophysical StudiesEarth and Planetary Sciences5.9%
- Diverse Scientific and Economic StudiesEconomics, Econometrics and Finance4.9%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Earth Sciences Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Earth Sciences | Zone 4 |
| Minor | Geosciences, Multidisciplinary | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Earth Sciences Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Earth Sciences | Zone 4 |
| Minor | Geosciences, Multidisciplinary | Zone 4 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Earth Sciences Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Earth Sciences | Zone 3 |
| Minor | Geosciences, Multidisciplinary | Zone 4 |
Top journal: noReview journal: no
Database indexing
SCIEScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor
- 1.46LetPub ·
- CiteScore 2026-06
- 3.2LetPub ·
- SJR 2026-06
- 0.46LetPub ·
- SNIP 2026-06
- 0.89LetPub ·
- h-index
- 60LetPub ·
- h-index
- 102OpenAlex ·
- i10-index
- 709OpenAlex ·
- 2-year mean citedness
- 1.47OpenAlex ·
- Self-citation rate
- 6.7%LetPub ·
- Share of gold OA articles
- 99.22%LetPub ·
Volume
- Articles per year
- 37LetPub ·
Articles by year OpenAlex count · 2,333 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 41 | 41 | 4 |
| 2025 | 50 | 50 | 107 |
| 2024 | 53 | 53 | 100 |
| 2023 | 37 | 37 | 173 |
| 2022 | 46 | 46 | 290 |
| 2021 | 42 | 42 | 560 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
Review time from article dates manuscript dates registered with Crossref · to
166 daysMedian, submission to acceptance · P25–P75 117 days – 283 days
- Acceptance to online
- median 31 days (89 articles)
- Submission to online
- median 204 days
- Sample
- 89 articles with submission and acceptance dates (102 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average acceptance (community reports)
- EasyLetPub ·
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Fully open accessOpenAlex
Every article is open access; authors usually pay an article processing charge (APC).
No source has fee information yet; check the journal's website.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Publisher
- International Union of Geological Sciences
- Country or region
- PEOPLES R CHINA
- Language
- English
- Frequency
- Quarterly
- ISSN
- 0705-3797
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗LetPub
FAQ
Frequently asked questions about Episodes
What CAS zone is Episodes in?
In the 2025 upgraded edition of the CAS Journal Ranking, Episodes is in Zone 4 of Earth Sciences, and in Zone 4 of the minor category Geosciences, Multidisciplinary. In the 2026 Xinrui edition it is in Zone 4 of Earth Sciences. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Episodes?
The latest impact factor listed by LetPub is 1.46; CiteScore 3.2, h-index 102.
How long does peer review take at Episodes?
Based on the dates recorded on 89 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 166 days (interquartile range 117–283 days); the community-reported acceptance is “Easy”. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Which databases index Episodes?
According to LetPub and DOAJ records, Episodes is indexed in SCIE and Scopus.
Is Episodes open access, and what is the APC?
Episodes is a fully open-access journal. Fee information is not available yet; check the journal's website.
Sources and updates
The facts on this page come from LetPub, OpenAlex; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-25). Last updated: .