The literature

This page exists so that nobody has to take the rest of the article on trust.  Every source it rests on is listed here with what it actually measured, who wrote it, and which way it cuts.

A catalogue of the literature on the atmospheric-helium argument: the crustal ⁴He degassing flux, thermal and non-thermal escape from the exosphere, the polar wind, the ³He/⁴He isotope budget, and the young-earth arguments built on all of them.

This is not a reading list of things that agree with this site.  Entries are tagged by the direction they cut.  A reader who wants only the strongest material against the argument can filter for undercuts.

How to read an entry

Measurement or model.  The crustal helium flux has never been measured globally.  It is inferred — from ⁴He/⁴⁰Ar ratios in natural gas, from groundwater accumulation, from heat flow, or from assumed crustal U and Th.  The polar-wind escape flux has been measured in situ by satellites at particular times and places, and then extrapolated globally by a model.  Both sides of this budget are model-heavy, and that is the single most important thing to know about the argument.

Direction.  Whether the source supports, undercuts, or complicates the young-earth atmospheric-helium argument.  Assigned by what the source shows, not by what its author believes.

Camp.  Mainstream, creationist, old-earth Christian, counter-apologetics, unaffiliated.  Disclosure, not a verdict.

Field definitions

The young-earth primary literature

Cook, M. A. (1957). "Where is the Earth's Radiogenic Helium?" Nature 179: 213 (26 January 1957). doi:10.1038/179213a0

topic yec-primary · camp creationist · type measurement (compilation of others' measurements) · access paywalled, first paragraph free · direction supports

One page.  The origin of the whole argument.  Cook, then Professor of Metallurgy at the University of Utah, sets out the imbalance: 2 × 10²⁰ g U and 5 × 10²⁰ g Th in the lithosphere generate ⁴He at ~3 × 10⁹ g/yr, so more than 10²⁰ g should have entered the air in 5 × 10⁹ yr, but the air holds only 3.5 × 10¹⁵ g.  He does not measure anything himself; he compiles Keevil's and Hurley's retention figures and draws the inference.  Access: the first paragraph is served free by Nature as the "Abstract" field of nature.com/articles/179213a0; the remainder is paywalled and was not obtained.

Cook, M. A. (1966). Prehistory and Earth Models. London: Max Parrish. pp. 11–14

topic yec-primary · camp creationist · type book · access archive.org printdisabled, search-inside · direction supports

Where Cook's actual number lives, and it is not only the number.  Gives ~1.2 × 10⁴ yr on Hurley's higher exudation estimate, "in remarkable agreement with the non-equilibrium radiocarbon method," confirmed by Cook's own 1986 statement that "I gave as my best result 12,000 years."  The companion upper limit on U/Th production alone is withheld from the article: the OCR destroys its exponent and the reconstruction conflicts with Cook's own 1957 inputs — see quarantine §2.  Also on pp. 13–14, and this is the part the first draft missed: Cook states the ³He/⁴He objection twenty years before the 1986 conference Discussion, notes the air's ratio is "twelve times greater than in natural gas," concludes that this is "strongly suggestive of an external source of terrestrial helium," and proposes accretion of meteoric material with ³He/⁴He "up to 0·3" as the source.  That proposal is answered in the article on R. H. Brown's own interplanetary-dust figure.  Read via bin/iapdsearch.py on item prehistoryearthm0000melv; folio = leaf − 20, anchored at leaves 30 and 36.

Morris, H. M. (1974/1981). Scientific Creationism. San Diego: Creation-Life Publishers. pp. 150–151

topic yec-primary · camp creationist · type popular · access archive.org printdisabled, search-inside · direction supports (but indefensible as stated)

The popular version.  Quotes Cook's Nature paragraph entire, then asserts "There is no evidence at all that Helium 4 either does, or can, escape from the exosphere in significant amounts."  That sentence was already false in 1974 — Axford's polar-wind paper is from 1968.  Also invokes Faul's higher efflux figure to get "several thousand years."  Item scientificcreati00inst; leaf 163 → folio 151.  Morris's own maximum-age arithmetic sits in a display equation the search-inside endpoint will not return, and the page image 403s.

Vardiman, L. (1985). "Up, Up and Away! The Helium Escape Problem." ICR Impact No. 143, May 1985

topic yec-primary · camp creationist · type popular · access Wayback capture, 12 February 1998 · direction mixed

Obtained 30 August 2026;  the first draft of this article listed it as unreachable.  The live URL is gone and there is no imp-143.pdf, but the Internet Archive's 1998 capture of icr.org/pubs/imp/imp-143.htm serves the whole piece.  (The 2008 capture of the same URL is a publications landing page and is useless.)  Four things in it that the 1986 conference paper does not give as plainly: the million-year answer printed a year earlier and blunter — "the present abundance of ⁴He would accumulate in 1.8 million years … Even in the case of ⁴He this is still 3,000 times too small";  the ³He impossibility in Vardiman's own words — "no temperature can be maintained at which both ³He and ⁴He fluxes are in equilibrium";  a water-vapour-canopy escape hatch for the ³He problem, citing his own Impact No. 128;  and the 1985 verdict on the polar wind, which he judged "not been adequately demonstrated to do the same for helium."

Vardiman, L. (1986). "The Age of the Earth's Atmosphere Estimated by its Helium Content." Proceedings of the First International Conference on Creationism, pp. 187–194

topic yec-primary · camp creationist · type model · access OA (ICR PDF; Cedarville DigitalCommons) · direction mixed

The strongest published form, and the one to argue against.  Vardiman computes Jeans escape himself (5 × 10⁴ atoms cm⁻² s⁻¹ at T_exo = 1500 K), names the polar wind, solar-wind sweeping and hot-ion exchange, cites Axford 1968 by volume and page, and derives 1.76 × 10⁶ yr from his own differential equation.  His 10,000-year conclusion follows only from assuming the helium is primordial, which he states plainly.  Tagged mixed because the paper concedes more than any creationist secondary source admits.  The volume also prints a signed Discussion by Melvin Cook and Vardiman's Closure, in which both men agree that the ³He/⁴He ratio is where the argument must be decided.  Warning: ICR's PDF is repaginated 1–7; cite the printed pages 187–194 or the section headings.

Vardiman, L. (1990). The Age of the Earth's Atmosphere: A Study of the Helium Flux through the Atmosphere. ICR Technical Monograph

topic yec-primary · camp creationist · type model · access NOT OBTAINED · direction unknown

Every route tried is listed in the dossier.  Page-level content partly recovered through Malcolm 1994's citations of pp. 13, 19–24 and 23.

Considered and not used.  Nothing from this monograph is cited in the article.  Its existence is mentioned, and the page-level content recovered through Malcolm's citations is held in quarantine §3, because a locator recovered from another author's citation is not a verified locator.

Malcolm, D. (1994). "Answering the Critics: Helium in the Earth's Atmosphere." Journal of Creation (TJ) 8(2): 142–147

topic yec-primary · camp creationist · type review · access OA (creation.com) · direction supports (but does not engage the mechanism)

A careful and correct re-derivation of Jeans escape from Walker 1977, in reply to Ken Smith in the Australian Skeptics' Creationism: An Australian Perspective.  Contains no polar-wind calculation and no number from Axford.  Dismisses all non-thermal escape with one borrowed sentence from Walker 1977, p. 172.  Written two years before Lie-Svendsen & Rees.  Useful chiefly as evidence of what the creationist literature has and has not addressed.

The young-earth retractions and the popular literature that ignored them

Brown, R. H. (1998). "Unique Enigmatic Helium." Origins 25(2): 55–73

topic yec-retraction, he3-budget · camp creationist · type model · access OA (grisda.org PDF) · direction undercuts

The single most important source added to this article, and it is a young-earth source.  Origins is the refereed journal of the Geoscience Research Institute.  Brown recomputes the atmospheric budget from the CRC Handbook's own numbers, gets "over 1.5 million years" for the atmosphere from crustal degassing, shows a tenfold cut in crustal production moves that up to 15 million years rather than down, tabulates seven non-thermal escape mechanisms, and adopts polar-region ion escape as "the principal means by which helium escapes from Earth."  His conclusion is the repudiation: Jeans-escape modelling "does not provide significant evidence in support of (or contradictory to) a young-earth viewpoint," and he names Malcolm 1994 as the "recent example" of the creationist literature he is correcting.  He also closes the created-helium hatch on his own side, since it would require "the creation of at least two types of helium … differing by several orders-of-magnitude."  He substitutes a different argument — excess ³He retained in minerals — which is live, is not the zircon argument, and is not assessed anywhere on this site.  Read the PDF, never the grisda HTML, which flattens every exponent.

Vardiman, L. (2005). "Evidence for a Young Earth from the Ocean and Atmosphere." Institute for Creation Research, icr.org, 8 October 2005

topic yec-retraction · camp creationist · type popular · access OA (icr.org) · direction undercuts

The argument's own author withdrawing it, in the section "Minor Gases in the Atmosphere": "For several years before the magnitude of the polar wind was determined Vardiman (1990) reported that the lack of helium in the atmosphere argued for a young earth.  That argument is no longer valid based on the measured and computed escape rate of helium to space in the polar wind."  He keeps the zircon argument in the next sentence and calls Humphreys' case "air-tight," so this is the withdrawal of one specific claim, not a change of position on the age of the earth.  His reference list also fixes the full title of the 1990 monograph.  Three paragraphs later he declines the atmospheric argon argument for the mirror reason — that flux has not been measured — which is useful to Atmospheric Argon-40.

Morris, J. D. (1994). The Young Earth. Colorado Springs: Master Books. pp. 83–84

topic yec-primary · camp creationist · type popular · access archive.org printdisabled, search-inside · direction supports (and concedes the article's central point)

The movement's best-known popular book on the age of the earth, giving MacDonald's fluxes in imperial units and reaching "no more than two million years."  Its value here is the concession, in plainer language than Vardiman ever used: "I don't conclude that the atmosphere is two million years old … I suspect that at the time of Creation there were some helium atoms in the atmosphere … Helium is a very useful, 'very good' element, and I suspect that the wise Creator would have included some in the original atmosphere."  That is the article's Step one stated by a young-earth author as his own position.  Item youngearth0000morr, leaves 85–86; page numbers read from youngearth0000morr_scandata.xml, offset 2, anchored at leaf 6 → p. 4 and leaf 211 → p. 209.

Snelling, A. A., Menton, D., Faulkner, D. R. & Purdom, G. (2013). "Evidence for a Young Earth and Creation," ch. 10 of The New Answers Book 4

topic yec-primary · camp creationist · type popular · access OA (answersingenesis.org) · direction supports

The live version of the argument, eight years after Vardiman withdrew it, and the reason this article is still worth writing.  Prints 1.8 million years in its own text, footnotes that figure to Vardiman's 1990 monograph, and bridges to 6,000 years by a Flood degassing pulse footnoted to Morris's The Young Earth pp. 83–85 — the pages where Morris says the helium was there at creation instead.  Its "Rescuing Devices" subsection answers zircon critics only and never mentions ion escape.

Humphreys, D. R. (2005). "Evidence for a Young World." Acts & Facts 34(6) / ICR Impact No. 384

topic yec-retraction · camp creationist · type popular · access OA (icr.org) · direction background

Used here for a negative.  Humphreys' canonical fourteen-item list of young-world evidences includes item 10, "Too much helium in minerals" — the zircon argument — and no atmospheric-helium item at all.  Neither does Answers' "10 Best Evidences from Science That Confirm a Young Earth" (2012).  Not a printed retraction, but a visible demotion by two of the movement's most-circulated lists.

Creation Ministries International. "Arguments we think creationists should NOT use." creation.com, 2006 and later revisions

topic yec-retraction, method · camp creationist · type popular · access OA · direction background

Used for the moon-dust precedent, which is structurally the same argument — an inventory divided by an influx, called a maximum age — retracted because the influx estimate turned out to be wrong.  Searched for salt, sodium, ocean, argon, helium, thorium, uranium: the only hit is "salt" inside the Castenedolo entry.  Neither atmospheric helium nor ocean sodium has ever been on this list, nor on the Answers in Genesis equivalent in its 2001 original or any later revision.

The CRSQ "Minisymposium on Variable Constants," vols. 26–27 (1990), eleven parts

topic method · camp creationist · type review · access OA (CRS EPrints PDFs) · direction background

Cited in the article for one point: accelerated decay, which the RATE contradiction turns on, was contested inside the Creation Research Society long before RATE published.  Four of the eleven were read for this article — DeYoung's editorial introduction (26(4):121), Byl part VII (27(2):68–71), Brown part X (27(3):100–102) and Gentry part XI (27(3):103–107).  Brown argues radiohalo sharpness fixes half-lives to within a factor of two; Gentry rejects that in the following article and warns his own side that constant decay rates would "firmly establish the basis of conventional radiometric dating."  The remaining seven parts — ids 691, 692, 697, 698, 703, 705, 708 at crsq.creationresearch.org/id/eprint/<id>/ — were not read and may hold more.

The escape physics

MacDonald, G. J. F. (1963). "The escape of helium from the Earth's atmosphere." Reviews of Geophysics 1(3): 305–349. doi:10.1029/RG001i003p00305

topic thermal-escape, crustal-flux · camp mainstream · type review · access paywalled, abstract free · direction supports

The mainstream source conceding the problem, six years before any creationist built on it.  Gives the two numbers everyone quotes: influx 2 × 10⁶ atoms cm⁻² s⁻¹, thermal escape 6 × 10⁴, "the present abundance of helium in the atmosphere would accumulate in about two million years."  Also reviews the ³He economy and its own difficulties.  Abstract read verbatim from the free Wiley page via bin/cdp-fetch.py; full text not obtained.  Also published as a longer chapter in Brancazio & Cameron, The Origin and Evolution of Atmospheres and Oceans (1964), pp. 127–182 — not yet sought.

Axford, W. I. (1968). "The polar wind and the terrestrial helium budget." JGR 73(21): 6855–6859. doi:10.1029/JA073i021p06855

topic polar-wind · camp mainstream · type model · access NOT OBTAINED (paywalled; no abstract printed) · direction undercuts

The paper that proposed the answer.  Pagination confirmed from Wiley's citation metadata.  The 1968 issue printed no abstract, ADS holds no free scan, and NTRS holds the citation with no PDF.  Its numbers are known here only at second hand: Vardiman 1986 attributes ~1 × 10⁵ atoms cm⁻² s⁻¹ to it; Kashyap 2009 attributes production rates of (1–3) × 10⁶ cm⁻² s⁻¹ and atmospheric abundances of 5.6 × 10³⁸ ⁴He and 7 × 10³² ³He to it.  Anyone writing from this article must not quote Axford directly until someone reads him.

Banks, P. M. & Holzer, T. E. (1968). "The polar wind." JGR 73(21): 6846–6854. doi:10.1029/JA073i021p06846

topic polar-wind · camp mainstream · type model · access NOT OBTAINED · direction undercuts

The companion paper, immediately preceding Axford's in the same issue.  Note that Vardiman, Malcolm and Dalrymple all cite instead Banks & Holzer, "High-latitude plasma transport: the polar wind," JGR 74 (1969): 6317–6323.  Both papers exist; do not conflate them.

Sheldon, W. R. & Kern, J. W. (1972). "Atmospheric helium and geomagnetic field reversals." JGR 77(31): 6194–6201. doi:10.1029/JA077i031p06194

topic reversals · camp mainstream · type model · access paywalled, abstract free · direction mixed

Proposes that the dominant ⁴He loss is solar-wind ion pumping during geomagnetic reversals, when the dipole is near zero: shock penetration to ~700 km, cascade ionisation ~10⁹ ions cm⁻² s⁻¹, enough for secular equilibrium over geological time.  Tagged mixed because it is a weak, undeveloped 1972 model that a young-earth writer may fairly call ad hoc — and because it cuts against the young-earth side, since Humphreys' model puts hundreds of reversals inside the Flood year.  Abstract read verbatim.

Lie-Svendsen, Ø. & Rees, M. H. (1996). "Helium escape from the terrestrial atmosphere: The ion outflow mechanism." JGR 101(A2): 2435–2443. doi:10.1029/95JA02208

topic polar-wind · camp mainstream · type model · access paywalled, abstract free · direction undercuts

The paper TalkOrigins claim CE001 rests on.  Concludes that "a cutoff latitude of about 60° or lower is sufficient to balance the outgassing from the Earth's crust."  Faulted in the mainstream literature by Kashyap 2009 for a non-drifting Maxwellian, for neglecting centrifugal acceleration, and above all because "a cut-off of 60º represents a significant overestimation of the area covered by the polar wind."  Abstract read verbatim.

Chamberlain, J. W. (1978); Chamberlain, J. W. & Hunten, D. M. (1987). Theory of Planetary Atmospheres. Academic Press. 1st ed. p. 278; 2nd ed. p. 372

topic thermal-escape, polar-wind · camp mainstream · type book · access archive.org printdisabled, search-inside · direction mixed

Source of the single most-quoted sentence in this controversy — "The problem will not go away and it is unsolved."  The next two sentences, which creationist sources omit, name the polar wind and charge exchange as the likely answers.  Identical text in both editions; folios anchored twice each against BookReaderJSIA.php.  Items theoryofplanetar0000cham (1978) and theoryofplanetar0000cham_s1n6 (1987).

Kashyap, J. (2009). The Relationship between the Polar Wind and the Terrestrial Helium Budget. MSc thesis, University of Calgary

topic polar-wind, he3-budget · camp mainstream · type model (with observational input) · access OA (Library and Archives Canada) · direction mixed

The single most useful modern document for this article.  States the imbalance in mainstream terms, compiles every flux with its source, simulates He⁺ trajectories from the polar ionosphere, and gets an escape rate of (3–5) × 10²⁴ s⁻¹ against a production rate of (4.5–9.5) × 10²⁴ s⁻¹ — "conceivably sufficient," which is not the same as balanced.  Also contains the mainstream criticism of Lie-Svendsen & Rees.  Tagged mixed because it both establishes that the polar wind works and shows that the budget is still open by a factor of about two.  Free PDF: collectionscanada.gc.ca/obj/thesescanada/vol2/002/MR54540.PDF.

Gronoff, G., et al. (2020). "Atmospheric Escape Processes and Planetary Atmospheric Evolution." JGR Space Physics 125: e2019JA027639. arXiv:2003.03231

topic polar-wind, method · camp mainstream · type review · access OA (arXiv) · direction background

Modern review of thermal and non-thermal escape across planets.  Held for background on mechanism; not mined for numbers in this pass.

Considered and not used.  The article's escape physics comes from Kashyap 2009, which is specific to helium and to the terrestrial budget, and from Chamberlain.  Gronoff is a cross-planetary review and adds no number the argument turns on.

The source flux and the isotope budget

Torgersen, T. (1989). "Terrestrial helium degassing fluxes and the atmospheric helium budget." Chemical Geology: Isotope Geoscience Section 79(1): 1–14

topic crustal-flux · camp mainstream · type model · access paywalled, abstract free · direction mixed

The canonical modern source flux: (0.9–1.9) × 10⁶ atoms cm⁻² s⁻¹, continental crust supplying ~60% and mid-ocean ridges ~22%.  Tagged mixed because the abstract says the estimates "strongly suggest a steady-state He atmosphere" while also conceding that ⁴He must somehow be transported out of ~40 km of crust by advection to make the number work.  Steady state is partly an input, not only an output.  Abstract read verbatim via bin/cdp-fetch.py.

Clarke, W. B., Beg, M. A. & Craig, H. (1969). "Excess ³He in the sea: evidence for terrestrial primordial helium." EPSL 6: 213–220

topic he3-budget, mantle-degassing · camp mainstream · type measurement · access NOT OBTAINED · direction mixed

The discovery of mantle ³He venting into the deep Pacific.  Vardiman leans on it heavily — it is his warrant for supposing primordial helium in the atmosphere as well.  It cuts the other way once the isotope ratios are put in: the atmosphere is at 1 R_A and the mantle at 8 R_A, which is what long-term crustal dilution looks like.

Schlitzer, R. (2016). "Quantifying He fluxes from the mantle using multi-tracer data assimilation." Phil. Trans. R. Soc. A 374(2081): 20150288

topic he3-budget, mantle-degassing · camp mainstream · type model · access OA, CC-BY (PMC5069525) · direction undercuts

Gives the history of the ridge ³He flux estimate: Craig et al. 1975 at 1070 ± 270 mol/yr, Bianchi et al. 2010 at 527 ± 102 mol/yr, Schlitzer's own optimum 450 ± 50 mol/yr.  Used here to compute what mid-ocean ridges alone deliver in 6,000 years: 0.25–0.47% of the atmosphere's ³He.

Counter-apologetics

Matson, D. E. (1994). "How good are those young-earth arguments?" — proof #14, helium. TalkOrigins Archive / Internet Infidels

topic counter-apologetics · camp counter-apologetics · type blog · access OA · direction undercuts (with errors)

The standard reply.  Its substance is a block quotation of Dalrymple 1984, pp. 112–113, giving Banks & Holzer's polar-wind escape as 2–4 × 10⁶ ions cm⁻² s⁻¹ against a production flux of (2.5 ± 1.5) × 10⁶.  Right on mechanism, overstated on magnitude — the modern figure is three to seven times lower.  Matson's own commentary also implies thermal escape does real work for ⁴He, which it does not (3%).  Answers Morris and Hovind; never engages Vardiman's actual 1986 paper.

Isaak, M. (2001). "CE001: Not Enough Helium?" Index to Creationist Claims, TalkOrigins Archive

topic counter-apologetics · camp counter-apologetics · type blog · access OA · direction undercuts (thin)

Two sentences and one citation, Lie-Svendsen & Rees 1996 — the paper Kashyap 2009 says overestimates the polar-cap area.  Cites Morris 1974 as the claim's source and does not mention Vardiman.

Dalrymple, G. B. (1984). "How Old Is the Earth? A Reply to 'Scientific' Creationism." Evolutionists Confront Creationists, Proc. 63rd Annual Meeting, Pacific Division AAAS, pp. 112–113

topic counter-apologetics · camp counter-apologetics · type review · access NOT OBTAINED · direction undercuts

Known only through Matson's block quotation.  The page attribution has not been checked against the printed volume and must be presented as "Matson quoting Dalrymple" until it is.  Dalrymple's 1991 Stanford book The Age of the Earth (archive.org ageofearth00unse) was searched and does not treat atmospheric helium; do not look for it there.

Stassen, C. "The Age of the Earth" FAQ, TalkOrigins

topic counter-apologetics · camp counter-apologetics · type blog · access OA · direction background

Downloaded and searched.  Does not discuss atmospheric helium at all — it is about meteorite isochrons and Patterson 1956.  Recorded so nobody hunts for a Stassen reply that does not exist.

Considered and not used.  Off topic.  The counter-apologetic replies the article grades are Matson 1994 and Isaak 2001.

Sources considered and not used

Marked in place above.  Three entries carry a Considered and not used note: Vardiman 1990 (nothing quotable was obtained), Gronoff et al. 2020 (background only), and Stassen's Age of the Earth FAQ (does not treat the topic).  A fourth is recorded but deliberately not answered: Brown 1998's substitute argument from ³He retained in minerals, which is cited in the article as something this site has not assessed rather than as something it rebuts.  Everything else in this file is cited in the article.  Material that could not be verified at all, including the 175,000-year figure, Cook's solar-corona claim, and the unverified Dalrymple page attribution, is in quarantine.

Cross-references, not duplicated here

• html/unpublished-ai/rate-helium-diffusion/ and agents/memory/rate-helium-diffusion.md — helium retained in zircons, a different argument with a different literature. The only shared quantity is the crustal ⁴He production rate.
• html/unpublished-ai/magnetic-field-decay/ and agents/memory/magnetic-field-decay.md — needed for Sheldon & Kern, because the young-earth reversal model interacts with reversal-driven helium escape.