Does the Biodeposit Inventory Require More Than a Recent Flood?

At a glance

Coal, oil, gas, and limestone add up to a mountain of buried biology — by the book’s numbers, 102,000 to 434,000 trillion tons. A single Flood year, the argument runs, cannot bury that much. This response checks the arithmetic behind the claim, and closes the series.

The book’s biodeposit chapter is its accounting department: where the other chapters argue about timing and mechanism, this one puts masses and energies on the table. The claim is straightforward — the fossil-fuel and biogenic-limestone inventory of Earth is so vast, and the preservation of dead biomass into deposits so inefficient, that the inventory records far more biological production than a recent short Flood could supply [1]. It is, in structure, the same kind of argument the series has examined throughout: not a direct observation of the Flood, but a budget comparison that only works if the budgets are the right ones.

Because this is the last response in the series, it does double duty: it audits this chapter’s arithmetic, and then it closes the ledger on the whole program — what the previous eleven responses established, and what remains open.

The book’s case, stated as strongly as it deserves

• The inventory is enormous. The chapter gives fossil-fuel and biogenic-limestone totals of 102,000–434,000 trillion tons, with Table 17.1 supplying ranges and allocations [1].

• Preservation is inefficient. Physical laws and biological decomposition are said to keep the conversion of dead biomass into preserved deposits far below one percent [1].

• The photosynthetic budget is the ceiling. The chapter compares a stated photosynthetic energy capture of roughly 3 × 10^21 joules — about 28 billion tons of oil equivalent — with the inventory, and finds the shortfall too large for a short history [1].

• The buried carbon is genuinely biological. Isotope ratios and skeletal fragments are cited as evidence that most of the deposits, including much limestone, trace to living things [1].

• The distribution is uneven. Fossil fuels and carbonate rocks cluster where a uniformly productive preflood world would not predict, on the book’s reading [1].

• And the abundance is providential. The long accumulation is interpreted as preparation — resources laid up for human civilization [1].

What the book gets right

Three acknowledgments, and they are not small ones for the series’ final entry.

The chapter asks the right question. “Where did all this buried carbon come from, and how fast could it have been buried?” is a real challenge to any flood model, and the book meets it with numbers rather than dismissals. The resource-assessment literature it draws on is the same literature everyone else uses [2]; the ranges are defensible; the chapter is candid about uncertainty.

Second, the raw fact is real. The crust genuinely holds an enormous store of reduced carbon and carbonate, and any account of Earth history has to move that mass through a sensible cycle. The flood-modeling community has not published a closed budget for the deposits it claims — this is the same gap the series flagged in the mechanism and biodiversity responses, and honesty requires saying it again here.

Third, the chapter’s providential layer is labeled as what it is. The series takes no position on that inference — this site does not dispute that God can prepare resources — but distinguishing resource utility from chronological demonstration, as the chapter implicitly does, is the right architecture [3].

Test one: the definitions behind the tonnage

Audit the inventory first, because the sizes depend on what is being counted. “Biodeposits” in this chapter’s usage gathers three very different things: reduced organic carbon (coal, oil, gas, clathrates — the actual fossilized biomass), and carbonate rock, whose carbon content is a small fraction of its mass and whose origin may be biological, chemical, or both. The brief behind this response requires the distinctions to be kept: organic carbon versus whole carbonate-rock mass, kerogen versus carbonate, and no double counting between fuels and rocks.

Those distinctions matter because the flood-side reply lives exactly there. A flood model does not need to bury today’s forests at today’s rates; it proposes that the Flood buried an entire pre-Flood biosphere — vegetation and animals — in a single cataclysmic event whose sedimentary signature is the point of the model. Whether the inventory’s totals could fit inside that event is a calculation nobody has closed — but the calculation’s difficulty is not evenly distributed across the categories: the carbonate mass, in particular, is not “buried biomass” in the sense the shortfall argument needs, and to the extent the book’s upper ranges (the 434,000 figure, especially) lean on whole-rock masses, the comparison against photosynthate inflates by construction. Keep the ranges, as the book does — and read them with the columns separated. The response cannot resolve the budget here; it can see that the book’s most alarming comparisons mix currencies.

Test two: the energy figure’s missing clock

The photosynthetic shortfall deserves the closest look of anything in the chapter, because the brief flags its central defect: the paragraph never states the time basis of the 3 × 10^21-joule quantity, and the conversions among joules, tons, and oil equivalents must be checked.

Here is why the omission decides the argument. Global net primary production today is on the order of sixty billion tons of carbon per year — which, at carbon’s combustion energy of roughly thirty-two to thirty-three kilojoules per gram, is a hair over 2 × 10^21 joules per year. The chapter’s figure — three times ten to the twenty-first joules, given as twenty-eight billion tons of oil equivalent — is therefore approximately ONE YEAR of planetary photosynthesis, stated as a stock. Compare a one-year flow against an inventory, and the inventory necessarily wins by a factor of the number of years considered; apply the comparison to any long history and it proves too much, and apply it to a short one and the real question — how much biomass the pre-Flood world held, and how much of it a cataclysm could bury — has not been asked. The arithmetic in the paragraph is not wrong in its conversions (28 billion tons of oil equivalent really is about ten to the twenty-first joules of order); it is wrong in its units of time. A stock-versus-flow comparison without the clock cannot carry a chronological conclusion.

Test three: what the isotope evidence does and does not show

The biogenicity case belongs to a different chapter of science, and this response grants its core: the carbon in ancient deposits is genuinely biological in origin, including traces from the Archean — the 3.95-billion-year-old signatures in Labrador are a fair example of how the evidence is read [4]. Fine.

But provenance is not a clock. “This carbon was made by living things” does not by itself specify how much life, over how long, under what burial efficiency — the three variables the shortfall argument needs. And the modern carbon cycle cuts in an instructive direction: the cited literature shows rock-derived organic carbon being oxidized and re-released at high rates as sediments transit floodplains [5], and microbes actively consuming ancient, radiocarbon-dead carbon during weathering [6]. That is the book’s own point about recycling — applied to ordinary conditions. A burial cataclysm is precisely the scenario in which the recycling machinery is overwhelmed rather than operative; so these sources establish the background rate the model must beat, not a ceiling the model cannot reach. The honest summary: isotope evidence settles what the carbon is, not how fast it piled up, and the burial-rate question remains open on both sides.

Test four: the uneven distribution and the strawman supercontinent

The distribution argument — that concentrated coal fields and carbonate platforms fit poorly with a uniformly productive preflood world — is the chapter’s weakest, for a reason the brief anticipated: it attacks a premise the models need not hold. No published flood model this response’s verification could find requires a uniform rainforest draped over a uniform continent. Flood geology predicts precisely the heterogeneities in play: pre-Flood biomes, latitudinal zonation, and a year of burial that scoured some regions and stacked others, followed by differential preservation. The fossil record’s patchiness is a datum every model shares; it discriminates between models only when their differing predictions are computed. The unevenness is real, and it is not the lever this chapter needs.

The series, closed

Twelve responses ago this series opened by asking what a book can establish and how claims should be weighed. The count now: the book’s reading of the Flood’s scope, of genealogical time, of creation’s boundaries, of the ark’s manifest — examined in responses 1 through 5 — stands or falls on the texts, and the site’s objections there were exegetical and, in the site’s view, decisive. The positive model — a regional Flood with mechanisms — was examined in response 6 and found to be a research program with honest hedges and unpaid debts. The archive arguments, the constancy measurements, the mechanism budgets, the before-the-Fall readings, the genetic clocks, and now the biodeposit inventory — responses 7 through 12 — turned out to have a common shape: the book’s evidence is real, the measurements are real, and the conclusions repeatedly outrun the evidence by exactly one step — a comparison that misses its time basis, a model presented as a measurement, an uncertainty offered as a mechanism.

That finding is the series’ honest gift to both sides. For readers inclined toward the book: the twelfth response’s ledger is the same as the first’s — the text claims more for the Flood than the regional reading allows, and the mechanism debts remain open. For readers inclined against it: the book’s questions are the right questions, its sources are real, and the unanswered items in these twelve responses — the closed heat budget, the eight-founder simulation, the burial arithmetic, the barrier record — are targets for work, not reasons for contempt. And for everyone: the man who wrote the book and the man who writes this site agree on more than either agrees with the internet’s version of them. The next article will appear when the literature moves. Until then, the archives stay open, and so do these pages.

Our response

On this chapter’s own narrow question — does the biodeposit inventory require more than a recent Flood? — the honest answer after verification is the same one this series has given at every stop: it has not been shown to, and it has not been shown not to. The inventory is real; the time-basis problem voids the energy comparison as stated; the biogenicity evidence does not set the rate; and no published flood model has closed the mass ledger the chapter opens. A budget question is settled with budgets — someone must publish the burial rates, preservation efficiencies, and resulting inventory under a specified flood chronology, and let the arithmetic speak. The chapter is an invitation to do that work. This response accepts the invitation and leaves it outstanding, on the record, in both directions.